diff --git a/lib/less-parser.js b/lib/less-parser.js
index 3a352ea..fbb77e4 100755
--- a/lib/less-parser.js
+++ b/lib/less-parser.js
@@ -1,6 +1,8 @@
 import Comment from 'postcss/lib/comment';
+import Declaration from 'postcss/lib/declaration';
 import Import from './import';
 import Parser from 'postcss/lib/parser';
+import AtRule from 'postcss/lib/at-rule';
 import Rule from './rule';
 import Root from './root';
 import findExtendRule from './find-extend-rule';
@@ -13,6 +15,7 @@ export default class LessParser extends Parser {
 
   constructor (input) {
     super(input);
+    this.pos = 0;
 
     this.root = new Root();
     this.current = this.root;
@@ -24,7 +27,7 @@ export default class LessParser extends Parser {
       this.import(token);
     }
     else {
-      super.atrule(token);
+      this.originAtrule(token);
     }
   }
 
@@ -410,5 +413,201 @@ export default class LessParser extends Parser {
     this.tokens = lessTokenizer(this.input);
   }
 
+  unknownWord (start) {
+    let token = this.tokens[start];
+    throw this.input.error('Unknown word', token[2], token[3]);
+  }
+
+  emptyRule (token) {
+    let node = new Rule();
+    this.init(node, token[2], token[3]);
+    node.selector = '';
+    node.raws.between = '';
+    this.current = node;
+  }
+
+  loop () {
+    let token;
+    while ( this.pos < this.tokens.length ) {
+      token = this.tokens[this.pos];
+
+      switch ( token[0] ) {
+
+        case 'space':
+        case ';':
+          this.spaces += token[1];
+          break;
+
+        case '}':
+          this.end(token);
+          break;
+
+        case 'comment':
+          this.comment(token);
+          break;
+
+        case 'at-word':
+          this.atrule(token);
+          break;
+
+        case '{':
+          this.emptyRule(token);
+          break;
+
+        default:
+          this.other();
+          break;
+      }
+
+      this.pos += 1;
+    }
+    this.endFile();
+  }
+
+  originAtrule (token) {
+    let node = new AtRule(), last = false, open = false, params = [];
+    node.name = token[1].slice(1);
+    if ( node.name === '' ) {
+      this.unnamedAtrule(node, token);
+    }
+    this.init(node, token[2], token[3]);
+
+    this.pos += 1;
+    while ( this.pos < this.tokens.length ) {
+      token = this.tokens[this.pos];
+
+      if ( token[0] === ';' ) {
+        node.source.end = { line: token[2], column: token[3] };
+        this.semicolon = true;
+        break;
+      }
+      else if ( token[0] === '{' ) {
+        open = true;
+        break;
+      }
+      else if ( token[0] === '}') {
+        this.end(token);
+        break;
+      }
+      else {
+        params.push(token);
+      }
+
+      this.pos += 1;
+    }
+    if ( this.pos === this.tokens.length ) {
+      last = true;
+    }
+
+    node.raws.between = this.spacesAndCommentsFromEnd(params);
+    if ( params.length ) {
+      node.raws.afterName = this.spacesAndCommentsFromStart(params);
+      this.raw(node, 'params', params);
+      if ( last ) {
+        token = params[params.length - 1];
+        node.source.end   = { line: token[4], column: token[5] };
+        this.spaces       = node.raws.between;
+        node.raws.between = '';
+      }
+    }
+    else {
+      node.raws.afterName = '';
+      node.params         = '';
+    }
+
+    if ( open ) {
+      node.nodes   = [];
+      this.current = node;
+    }
+  }
+
+  decl (tokens) {
+    let node, last, token;
+    node = new Declaration();
+    this.init(node);
+
+    last = tokens[tokens.length - 1];
+    if ( last[0] === ';' ) {
+      this.semicolon = true;
+      tokens.pop();
+    }
+    if ( last[4] ) {
+      node.source.end = { line: last[4], column: last[5] };
+    }
+    else {
+      node.source.end = { line: last[2], column: last[3] };
+    }
+
+    while ( tokens[0][0] !== 'word' ) {
+      node.raws.before += tokens.shift()[1];
+    }
+    node.source.start = { line: tokens[0][2], column: tokens[0][3] };
+
+    node.prop = '';
+    while ( tokens.length ) {
+      let type = tokens[0][0];
+      if ( type === ':' || type === 'space' || type === 'comment' ) {
+        break;
+      }
+      node.prop += tokens.shift()[1];
+    }
+
+    node.raws.between = '';
+
+    while ( tokens.length ) {
+      token = tokens.shift();
+
+      if ( token[0] === ':' ) {
+        node.raws.between += token[1];
+        break;
+      }
+      else {
+        node.raws.between += token[1];
+      }
+    }
+
+    if ( node.prop[0] === '_' || node.prop[0] === '*' ) {
+      node.raws.before += node.prop[0];
+      node.prop = node.prop.slice(1);
+    }
+    node.raws.between += this.spacesAndCommentsFromStart(tokens);
+    this.precheckMissedSemicolon(tokens);
+
+    for ( let i = tokens.length - 1; i > 0; i-- ) {
+      token = tokens[i];
+      if ( token[1] === '!important' ) {
+        node.important = true;
+        let string = this.stringFrom(tokens, i);
+        string = this.spacesFromEnd(tokens) + string;
+        if ( string !== ' !important' ) node.raws.important = string;
+        break;
+
+      }
+      else if (token[1] === 'important') {
+        let cache = tokens.slice(0), str = '';
+        for ( let j = i; j > 0; j-- ) {
+          let type = cache[j][0];
+          if ( str.trim().indexOf('!') === 0 && type !== 'space' ) {
+            break;
+          }
+          str = cache.pop()[1] + str;
+        }
+        if ( str.trim().indexOf('!') === 0 ) {
+          node.important = true;
+          node.raws.important = str;
+          tokens = cache;
+        }
+      }
+
+      if ( token[0] !== 'space' && token[0] !== 'comment' ) {
+        break;
+      }
+    }
+
+    this.raw(node, 'value', tokens);
+
+    if ( node.value.indexOf(':') !== -1 ) this.checkMissedSemicolon(tokens);
+  }
+
     /* eslint-enable max-statements, complexity */
 }
diff --git a/package-lock.json b/package-lock.json
index f06ef24..8a3e29a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       "integrity": "sha512-SFKX67auSNoVR38N3L+nvsPjOE0bybKTYbkf5tRvushrAPQ9V75huw0ZxBkKVeRU9kqH3d6HA4xTckbwZ4ixmA==",
       "dev": true,
       "requires": {
-        "ansi-wrap": "0.1.0"
+        "ansi-wrap": "^0.1.0"
       }
     },
     "ansi-gray": {
@@ -23,12 +23,14 @@
       }
     },
     "ansi-regex": {
-      "version": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
       "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
       "dev": true
     },
     "ansi-styles": {
-      "version": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
       "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
       "dev": true
     },
@@ -74,25 +76,25 @@
       "integrity": "sha512-6jyFLuDmeidKmUEb3NM+/yawG0M2bDZ9Z1qbZP59cyHLz8kYGKYwpJP0UwUKKUiTRNvxfLesJnTedqczP7cTDA==",
       "dev": true,
       "requires": {
-        "babel-code-frame": "6.26.0",
-        "babel-generator": "6.26.1",
-        "babel-helpers": "6.24.1",
-        "babel-messages": "6.23.0",
-        "babel-register": "6.26.0",
-        "babel-runtime": "6.26.0",
-        "babel-template": "6.26.0",
-        "babel-traverse": "6.26.0",
-        "babel-types": "6.26.0",
-        "babylon": "6.18.0",
-        "convert-source-map": "1.5.1",
-        "debug": "2.6.9",
-        "json5": "0.5.1",
-        "lodash": "4.17.10",
-        "minimatch": "3.0.4",
-        "path-is-absolute": "1.0.1",
-        "private": "0.1.8",
-        "slash": "1.0.0",
-        "source-map": "0.5.7"
+        "babel-code-frame": "^6.26.0",
+        "babel-generator": "^6.26.0",
+        "babel-helpers": "^6.24.1",
+        "babel-messages": "^6.23.0",
+        "babel-register": "^6.26.0",
+        "babel-runtime": "^6.26.0",
+        "babel-template": "^6.26.0",
+        "babel-traverse": "^6.26.0",
+        "babel-types": "^6.26.0",
+        "babylon": "^6.18.0",
+        "convert-source-map": "^1.5.1",
+        "debug": "^2.6.9",
+        "json5": "^0.5.1",
+        "lodash": "^4.17.4",
+        "minimatch": "^3.0.4",
+        "path-is-absolute": "^1.0.1",
+        "private": "^0.1.8",
+        "slash": "^1.0.0",
+        "source-map": "^0.5.7"
       },
       "dependencies": {
         "ansi-regex": {
@@ -113,9 +115,9 @@
           "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
           "dev": true,
           "requires": {
-            "chalk": "1.1.3",
-            "esutils": "2.0.2",
-            "js-tokens": "3.0.2"
+            "chalk": "^1.1.3",
+            "esutils": "^2.0.2",
+            "js-tokens": "^3.0.2"
           }
         },
         "babel-generator": {
@@ -124,14 +126,14 @@
           "integrity": "sha512-HyfwY6ApZj7BYTcJURpM5tznulaBvyio7/0d4zFOeMPUmfxkCjHocCuoLa2SAGzBI8AREcH3eP3758F672DppA==",
           "dev": true,
           "requires": {
-            "babel-messages": "6.23.0",
-            "babel-runtime": "6.26.0",
-            "babel-types": "6.26.0",
-            "detect-indent": "4.0.0",
-            "jsesc": "1.3.0",
-            "lodash": "4.17.10",
-            "source-map": "0.5.7",
-            "trim-right": "1.0.1"
+            "babel-messages": "^6.23.0",
+            "babel-runtime": "^6.26.0",
+            "babel-types": "^6.26.0",
+            "detect-indent": "^4.0.0",
+            "jsesc": "^1.3.0",
+            "lodash": "^4.17.4",
+            "source-map": "^0.5.7",
+            "trim-right": "^1.0.1"
           }
         },
         "babel-helpers": {
@@ -140,8 +142,8 @@
           "integrity": "sha1-NHHenK7DiOXIUOWX5Yom3fN2ArI=",
           "dev": true,
           "requires": {
-            "babel-runtime": "6.26.0",
-            "babel-template": "6.26.0"
+            "babel-runtime": "^6.22.0",
+            "babel-template": "^6.24.1"
           }
         },
         "babel-messages": {
@@ -150,7 +152,7 @@
           "integrity": "sha1-8830cDhYA1sqKVHG7F7fbGLyYw4=",
           "dev": true,
           "requires": {
-            "babel-runtime": "6.26.0"
+            "babel-runtime": "^6.22.0"
           }
         },
         "babel-runtime": {
@@ -159,8 +161,8 @@
           "integrity": "sha1-llxwWGaOgrVde/4E/yM3vItWR/4=",
           "dev": true,
           "requires": {
-            "core-js": "2.5.7",
-            "regenerator-runtime": "0.11.1"
+            "core-js": "^2.4.0",
+            "regenerator-runtime": "^0.11.0"
           }
         },
         "babel-template": {
@@ -169,11 +171,11 @@
           "integrity": "sha1-3gPi0WOWsGn0bdn/+FIfsaDjXgI=",
           "dev": true,
           "requires": {
-            "babel-runtime": "6.26.0",
-            "babel-traverse": "6.26.0",
-            "babel-types": "6.26.0",
-            "babylon": "6.18.0",
-            "lodash": "4.17.10"
+            "babel-runtime": "^6.26.0",
+            "babel-traverse": "^6.26.0",
+            "babel-types": "^6.26.0",
+            "babylon": "^6.18.0",
+            "lodash": "^4.17.4"
           }
         },
         "babel-traverse": {
@@ -182,15 +184,15 @@
           "integrity": "sha1-RqnL1+3MYsjlwGTi0tjQ9ANXZu4=",
           "dev": true,
           "requires": {
-            "babel-code-frame": "6.26.0",
-            "babel-messages": "6.23.0",
-            "babel-runtime": "6.26.0",
-            "babel-types": "6.26.0",
-            "babylon": "6.18.0",
-            "debug": "2.6.9",
-            "globals": "9.18.0",
-            "invariant": "2.2.4",
-            "lodash": "4.17.10"
+            "babel-code-frame": "^6.26.0",
+            "babel-messages": "^6.23.0",
+            "babel-runtime": "^6.26.0",
+            "babel-types": "^6.26.0",
+            "babylon": "^6.18.0",
+            "debug": "^2.6.8",
+            "globals": "^9.18.0",
+            "invariant": "^2.2.2",
+            "lodash": "^4.17.4"
           }
         },
         "babel-types": {
@@ -199,10 +201,10 @@
           "integrity": "sha1-o7Bz+Uq0nrb6Vc1lInozQ4BjJJc=",
           "dev": true,
           "requires": {
-            "babel-runtime": "6.26.0",
-            "esutils": "2.0.2",
-            "lodash": "4.17.10",
-            "to-fast-properties": "1.0.3"
+            "babel-runtime": "^6.26.0",
+            "esutils": "^2.0.2",
+            "lodash": "^4.17.4",
+            "to-fast-properties": "^1.0.3"
           }
         },
         "babylon": {
@@ -223,7 +225,7 @@
           "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
           "dev": true,
           "requires": {
-            "balanced-match": "1.0.0",
+            "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
           }
         },
@@ -233,11 +235,11 @@
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
-            "ansi-styles": "2.2.1",
-            "escape-string-regexp": "1.0.5",
-            "has-ansi": "2.0.0",
-            "strip-ansi": "3.0.1",
-            "supports-color": "2.0.0"
+            "ansi-styles": "^2.2.1",
+            "escape-string-regexp": "^1.0.2",
+            "has-ansi": "^2.0.0",
+            "strip-ansi": "^3.0.0",
+            "supports-color": "^2.0.0"
           }
         },
         "concat-map": {
@@ -273,7 +275,7 @@
           "integrity": "sha1-920GQ1LN9Docts5hnE7jqUdd4gg=",
           "dev": true,
           "requires": {
-            "repeating": "2.0.1"
+            "repeating": "^2.0.0"
           }
         },
         "escape-string-regexp": {
@@ -300,7 +302,7 @@
           "integrity": "sha1-NPUEnOHs3ysGSa8+8k5F7TVBbZE=",
           "dev": true,
           "requires": {
-            "ansi-regex": "2.1.1"
+            "ansi-regex": "^2.0.0"
           }
         },
         "invariant": {
@@ -309,7 +311,7 @@
           "integrity": "sha512-phJfQVBuaJM5raOpJjSfkiD6BpbCE4Ns//LaXl6wGYtUBY83nWS6Rf9tXm2e8VaK60JEjYldbPif/A2B1C2gNA==",
           "dev": true,
           "requires": {
-            "loose-envify": "1.3.1"
+            "loose-envify": "^1.0.0"
           }
         },
         "is-finite": {
@@ -318,7 +320,7 @@
           "integrity": "sha1-zGZ3aVYCvlUO8R6LSqYwU0K20Ko=",
           "dev": true,
           "requires": {
-            "number-is-nan": "1.0.1"
+            "number-is-nan": "^1.0.0"
           }
         },
         "js-tokens": {
@@ -351,7 +353,7 @@
           "integrity": "sha1-0aitM/qc4OcT1l/dCsi3SNR4yEg=",
           "dev": true,
           "requires": {
-            "js-tokens": "3.0.2"
+            "js-tokens": "^3.0.0"
           }
         },
         "minimatch": {
@@ -360,7 +362,7 @@
           "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
           "dev": true,
           "requires": {
-            "brace-expansion": "1.1.11"
+            "brace-expansion": "^1.1.7"
           }
         },
         "ms": {
@@ -399,7 +401,7 @@
           "integrity": "sha1-UhTFOpJtNVJwdSf7q0FdvAjQbdo=",
           "dev": true,
           "requires": {
-            "is-finite": "1.0.2"
+            "is-finite": "^1.0.0"
           }
         },
         "slash": {
@@ -420,7 +422,7 @@
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
-            "ansi-regex": "2.1.1"
+            "ansi-regex": "^2.0.0"
           }
         },
         "supports-color": {
@@ -449,10 +451,10 @@
       "integrity": "sha1-sv4tgBJkcPXBlELcdXJTqJdxCCc=",
       "dev": true,
       "requires": {
-        "babel-code-frame": "6.26.0",
-        "babel-traverse": "6.26.0",
-        "babel-types": "6.26.0",
-        "babylon": "6.18.0"
+        "babel-code-frame": "^6.22.0",
+        "babel-traverse": "^6.23.1",
+        "babel-types": "^6.23.0",
+        "babylon": "^6.17.0"
       },
       "dependencies": {
         "ansi-regex": {
@@ -473,9 +475,9 @@
           "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
           "dev": true,
           "requires": {
-            "chalk": "1.1.3",
-            "esutils": "2.0.2",
-            "js-tokens": "3.0.2"
+            "chalk": "^1.1.3",
+            "esutils": "^2.0.2",
+            "js-tokens": "^3.0.2"
           }
         },
         "babel-messages": {
@@ -484,7 +486,7 @@
           "integrity": "sha1-8830cDhYA1sqKVHG7F7fbGLyYw4=",
           "dev": true,
           "requires": {
-            "babel-runtime": "6.26.0"
+            "babel-runtime": "^6.22.0"
           }
         },
         "babel-runtime": {
@@ -493,8 +495,8 @@
           "integrity": "sha1-llxwWGaOgrVde/4E/yM3vItWR/4=",
           "dev": true,
           "requires": {
-            "core-js": "2.5.7",
-            "regenerator-runtime": "0.11.1"
+            "core-js": "^2.4.0",
+            "regenerator-runtime": "^0.11.0"
           }
         },
         "babel-traverse": {
@@ -503,15 +505,15 @@
           "integrity": "sha1-RqnL1+3MYsjlwGTi0tjQ9ANXZu4=",
           "dev": true,
           "requires": {
-            "babel-code-frame": "6.26.0",
-            "babel-messages": "6.23.0",
-            "babel-runtime": "6.26.0",
-            "babel-types": "6.26.0",
-            "babylon": "6.18.0",
-            "debug": "2.6.9",
-            "globals": "9.18.0",
-            "invariant": "2.2.4",
-            "lodash": "4.17.10"
+            "babel-code-frame": "^6.26.0",
+            "babel-messages": "^6.23.0",
+            "babel-runtime": "^6.26.0",
+            "babel-types": "^6.26.0",
+            "babylon": "^6.18.0",
+            "debug": "^2.6.8",
+            "globals": "^9.18.0",
+            "invariant": "^2.2.2",
+            "lodash": "^4.17.4"
           }
         },
         "babel-types": {
@@ -520,10 +522,10 @@
           "integrity": "sha1-o7Bz+Uq0nrb6Vc1lInozQ4BjJJc=",
           "dev": true,
           "requires": {
-            "babel-runtime": "6.26.0",
-            "esutils": "2.0.2",
-            "lodash": "4.17.10",
-            "to-fast-properties": "1.0.3"
+            "babel-runtime": "^6.26.0",
+            "esutils": "^2.0.2",
+            "lodash": "^4.17.4",
+            "to-fast-properties": "^1.0.3"
           }
         },
         "babylon": {
@@ -538,11 +540,11 @@
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
-            "ansi-styles": "2.2.1",
-            "escape-string-regexp": "1.0.5",
-            "has-ansi": "2.0.0",
-            "strip-ansi": "3.0.1",
-            "supports-color": "2.0.0"
+            "ansi-styles": "^2.2.1",
+            "escape-string-regexp": "^1.0.2",
+            "has-ansi": "^2.0.0",
+            "strip-ansi": "^3.0.0",
+            "supports-color": "^2.0.0"
           }
         },
         "core-js": {
@@ -584,7 +586,7 @@
           "integrity": "sha1-NPUEnOHs3ysGSa8+8k5F7TVBbZE=",
           "dev": true,
           "requires": {
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-            "tunnel-agent": "0.6.0",
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@@ -6187,7 +6210,7 @@
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@@ -6237,7 +6260,7 @@
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@@ -6247,7 +6270,7 @@
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-            "tough-cookie": "2.3.4",
-            "tunnel-agent": "0.6.0",
-            "uuid": "3.2.1"
+            "aws-sign2": "~0.7.0",
+            "aws4": "^1.6.0",
+            "caseless": "~0.12.0",
+            "combined-stream": "~1.0.5",
+            "extend": "~3.0.1",
+            "forever-agent": "~0.6.1",
+            "form-data": "~2.3.1",
+            "har-validator": "~5.0.3",
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+            "oauth-sign": "~0.8.2",
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+            "safe-buffer": "^5.1.1",
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+            "tunnel-agent": "^0.6.0",
+            "uuid": "^3.1.0"
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@@ -7228,14 +7195,14 @@
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-            "getpass": "0.1.7",
-            "jsbn": "0.1.1",
-            "tweetnacl": "0.14.5"
+            "asn1": "~0.2.3",
+            "assert-plus": "^1.0.0",
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+            "dashdash": "^1.12.0",
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+            "getpass": "^0.1.1",
+            "jsbn": "~0.1.0",
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@@ -7244,7 +7211,7 @@
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-            "punycode": "1.4.1"
+            "punycode": "^1.4.1"
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@@ -7253,7 +7220,7 @@
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           "dev": true,
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@@ -7275,9 +7242,9 @@
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@@ -7288,8 +7255,8 @@
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-        "safe-regex": "1.1.0"
+        "extend-shallow": "^3.0.2",
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@@ -7310,8 +7277,8 @@
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-        "gulp-util": "3.0.8"
+        "chalk": "*",
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@@ -7320,7 +7287,7 @@
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+        "ret": "~0.1.10"
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@@ -7329,10 +7296,10 @@
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-        "is-extendable": "0.1.1",
-        "is-plain-object": "2.0.4",
-        "split-string": "3.1.0"
+        "extend-shallow": "^2.0.1",
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@@ -7341,7 +7308,7 @@
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@@ -7358,14 +7325,14 @@
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-        "source-map": "0.5.7",
-        "source-map-resolve": "0.5.2",
-        "use": "3.1.0"
+        "base": "^0.11.1",
+        "debug": "^2.2.0",
+        "define-property": "^0.2.5",
+        "extend-shallow": "^2.0.1",
+        "map-cache": "^0.2.2",
+        "source-map": "^0.5.6",
+        "source-map-resolve": "^0.5.0",
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@@ -7383,7 +7350,7 @@
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           "dev": true,
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-            "is-descriptor": "0.1.6"
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@@ -7392,7 +7359,7 @@
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@@ -7427,9 +7394,9 @@
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-        "define-property": "1.0.0",
-        "isobject": "3.0.1",
-        "snapdragon-util": "3.0.1"
+        "define-property": "^1.0.0",
+        "isobject": "^3.0.0",
+        "snapdragon-util": "^3.0.1"
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@@ -7438,7 +7405,7 @@
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           "dev": true,
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-            "is-descriptor": "1.0.2"
+            "is-descriptor": "^1.0.0"
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@@ -7447,7 +7414,7 @@
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           "dev": true,
           "requires": {
-            "kind-of": "6.0.2"
+            "kind-of": "^6.0.0"
           }
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@@ -7456,7 +7423,7 @@
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           "dev": true,
           "requires": {
-            "kind-of": "6.0.2"
+            "kind-of": "^6.0.0"
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@@ -7465,9 +7432,9 @@
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-            "is-accessor-descriptor": "1.0.0",
-            "is-data-descriptor": "1.0.0",
-            "kind-of": "6.0.2"
+            "is-accessor-descriptor": "^1.0.0",
+            "is-data-descriptor": "^1.0.0",
+            "kind-of": "^6.0.2"
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@@ -7490,7 +7457,7 @@
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       "dev": true,
       "requires": {
-        "kind-of": "3.2.2"
+        "kind-of": "^3.2.0"
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@@ -7505,22 +7472,27 @@
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           "dev": true,
           "requires": {
-            "is-buffer": "1.1.6"
+            "is-buffer": "^1.1.5"
           }
         }
       }
     },
+    "source-map": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
+    },
     "source-map-resolve": {
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       "resolved": "https://registry.npmjs.org/source-map-resolve/-/source-map-resolve-0.5.2.tgz",
       "integrity": "sha512-MjqsvNwyz1s0k81Goz/9vRBe9SZdB09Bdw+/zYyO+3CuPk6fouTaxscHkgtE8jKvf01kVfl8riHzERQ/kefaSA==",
       "dev": true,
       "requires": {
-        "atob": "2.1.1",
-        "decode-uri-component": "0.2.0",
-        "resolve-url": "0.2.1",
-        "source-map-url": "0.4.0",
-        "urix": "0.1.0"
+        "atob": "^2.1.1",
+        "decode-uri-component": "^0.2.0",
+        "resolve-url": "^0.2.1",
+        "source-map-url": "^0.4.0",
+        "urix": "^0.1.0"
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@@ -7535,7 +7507,7 @@
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       "dev": true,
       "requires": {
-        "extend-shallow": "3.0.2"
+        "extend-shallow": "^3.0.0"
       }
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     "static-extend": {
@@ -7544,8 +7516,8 @@
       "integrity": "sha1-YICcOcv/VTNyJv1eC1IPNB8ftcY=",
       "dev": true,
       "requires": {
-        "define-property": "0.2.5",
-        "object-copy": "0.1.0"
+        "define-property": "^0.2.5",
+        "object-copy": "^0.1.0"
       },
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@@ -7554,17 +7526,26 @@
           "integrity": "sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=",
           "dev": true,
           "requires": {
-            "is-descriptor": "0.1.6"
+            "is-descriptor": "^0.1.0"
           }
         }
       }
     },
     "strip-ansi": {
-      "version": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
       "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
       "dev": true,
       "requires": {
-        "ansi-regex": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz"
+        "ansi-regex": "^2.0.0"
+      }
+    },
+    "supports-color": {
+      "version": "5.5.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+      "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+      "requires": {
+        "has-flag": "^3.0.0"
       }
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     "through": {
@@ -7579,7 +7560,7 @@
       "integrity": "sha1-KXWIt7Dn4KwI4E5nL4XB9JmeF68=",
       "dev": true,
       "requires": {
-        "kind-of": "3.2.2"
+        "kind-of": "^3.0.2"
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@@ -7594,7 +7575,7 @@
           "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
           "dev": true,
           "requires": {
-            "is-buffer": "1.1.6"
+            "is-buffer": "^1.1.5"
           }
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@@ -7605,10 +7586,10 @@
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       "dev": true,
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-        "define-property": "2.0.2",
-        "extend-shallow": "3.0.2",
-        "regex-not": "1.0.2",
-        "safe-regex": "1.1.0"
+        "define-property": "^2.0.2",
+        "extend-shallow": "^3.0.2",
+        "regex-not": "^1.0.2",
+        "safe-regex": "^1.1.0"
       }
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     "to-regex-range": {
@@ -7617,8 +7598,8 @@
       "integrity": "sha1-fIDBe53+vlmeJzZ+DU3VWQFB2zg=",
       "dev": true,
       "requires": {
-        "is-number": "3.0.0",
-        "repeat-string": "1.6.1"
+        "is-number": "^3.0.0",
+        "repeat-string": "^1.6.1"
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@@ -7633,7 +7614,7 @@
           "integrity": "sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=",
           "dev": true,
           "requires": {
-            "kind-of": "3.2.2"
+            "kind-of": "^3.0.2"
           }
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@@ -7642,7 +7623,7 @@
           "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
           "dev": true,
           "requires": {
-            "is-buffer": "1.1.6"
+            "is-buffer": "^1.1.5"
           }
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         "repeat-string": {
@@ -7659,10 +7640,10 @@
       "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
       "dev": true,
       "requires": {
-        "arr-union": "3.1.0",
-        "get-value": "2.0.6",
-        "is-extendable": "0.1.1",
-        "set-value": "0.4.3"
+        "arr-union": "^3.1.0",
+        "get-value": "^2.0.6",
+        "is-extendable": "^0.1.1",
+        "set-value": "^0.4.3"
       },
       "dependencies": {
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@@ -7671,7 +7652,7 @@
           "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
           "dev": true,
           "requires": {
-            "is-extendable": "0.1.1"
+            "is-extendable": "^0.1.0"
           }
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         "is-extendable": {
@@ -7686,10 +7667,10 @@
           "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
           "dev": true,
           "requires": {
-            "extend-shallow": "2.0.1",
-            "is-extendable": "0.1.1",
-            "is-plain-object": "2.0.4",
-            "to-object-path": "0.3.0"
+            "extend-shallow": "^2.0.1",
+            "is-extendable": "^0.1.1",
+            "is-plain-object": "^2.0.1",
+            "to-object-path": "^0.3.0"
           }
         }
       }
@@ -7700,8 +7681,8 @@
       "integrity": "sha1-g3aHP30jNRef+x5vw6jtDfyKtVk=",
       "dev": true,
       "requires": {
-        "has-value": "0.3.1",
-        "isobject": "3.0.1"
+        "has-value": "^0.3.1",
+        "isobject": "^3.0.0"
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@@ -7710,9 +7691,9 @@
           "integrity": "sha1-ex9YutpiyoJ+wKIHgCVlSEWZXh8=",
           "dev": true,
           "requires": {
-            "get-value": "2.0.6",
-            "has-values": "0.1.4",
-            "isobject": "2.1.0"
+            "get-value": "^2.0.3",
+            "has-values": "^0.1.4",
+            "isobject": "^2.0.0"
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@@ -7758,7 +7739,7 @@
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       "dev": true,
       "requires": {
-        "kind-of": "6.0.2"
+        "kind-of": "^6.0.2"
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         "kind-of": {
diff --git a/package.json b/package.json
index 7e48ecd..bb851f0 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "prepublish": "./node_modules/.bin/gulp dist"
   },
   "dependencies": {
-    "postcss": "^5.2.16"
+    "postcss": "^7.0.2"
   },
   "devDependencies": {
     "babel-core": "^6.7.2",