90 | this.element.appendChild(this.chart); 91 | // Append the polygon to the target 4 | 5 | ITCSS Specificity Graph 6 | 7 | 8 | 9 | 10 | 11 | 47 |

48 | 49 | 50 | 51 | 52 | 53 | 54 |

55 |

Graph My CSS

56 | 57 |

This graph shows the specificity of your CSS selectors throughout your file. The left side is the first selector and the right side is the last one. Idealy you will have very low specificity throughout your whole file, and any higher specificity selectors will come at the end. This means you are overriding fewer things, and in turn, writing less redundent, and more maintainable CSS. This is heavily influenced by the ITCSS methodology.

Watch an hour long video explaining these ideas in detail, or get the TLDR in 3 pictures.

58 | 59 |

60 |

61 |

62 |

63 | 64 |

Paste your CSS:

65 | 73 | 74 |

Your data:

75 |

Array
JSON
CSV

80 | 81 | 82 | 83 |

How should I organize my Sass files? Here's an example of one way.

84 |

85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 157 | 158 | 159 | 160 | 161 | 162 | 184 | 185 | 186 | -------------------------------------------------------------------------------- /js/ven.reworkcss.js: -------------------------------------------------------------------------------- 1 | // This file is from: 2 | // https://github.com/reworkcss/css/blob/master/lib/parse/index.js 3 | // We modified line 9 for browser use. 4 | 5 | // http://www.w3.org/TR/CSS21/grammar.html 6 | // https://github.com/visionmedia/css-parse/pull/49#issuecomment-30088027 7 | var commentre = /\/\*[^*]*\*+([^/*][^*]*\*+)*\//g 8 | 9 | window.cssParse = function (css, options) { 10 | options = options || {}; 11 | 12 | /** 13 | * Positional. 14 | */ 15 | 16 | var lineno = 1; 17 | var column = 1; 18 | 19 | /** 20 | * Update lineno and column based on `str`. 21 | */ 22 | 23 | function updatePosition(str) { 24 | var lines = str.match(/\n/g); 25 | if (lines) lineno += lines.length; 26 | var i = str.lastIndexOf('\n'); 27 | column = ~i ? str.length - i : column + str.length; 28 | } 29 | 30 | /** 31 | * Mark position and patch `node.position`. 32 | */ 33 | 34 | function position() { 35 | var start = { line: lineno, column: column }; 36 | return function(node){ 37 | node.position = new Position(start); 38 | whitespace(); 39 | return node; 40 | }; 41 | } 42 | 43 | /** 44 | * Store position information for a node 45 | */ 46 | 47 | function Position(start) { 48 | this.start = start; 49 | this.end = { line: lineno, column: column }; 50 | this.source = options.source; 51 | } 52 | 53 | /** 54 | * Non-enumerable source string 55 | */ 56 | 57 | Position.prototype.content = css; 58 | 59 | /** 60 | * Error `msg`. 61 | */ 62 | 63 | var errorsList = []; 64 | 65 | function error(msg) { 66 | var err = new Error(options.source + ':' + lineno + ':' + column + ': ' + msg); 67 | err.reason = msg; 68 | err.filename = options.source; 69 | err.line = lineno; 70 | err.column = column; 71 | err.source = css; 72 | 73 | if (options.silent) { 74 | errorsList.push(err); 75 | } else { 76 | throw err; 77 | } 78 | } 79 | 80 | /** 81 | * Parse stylesheet. 82 | */ 83 | 84 | function stylesheet() { 85 | var rulesList = rules(); 86 | 87 | return { 88 | type: 'stylesheet', 89 | stylesheet: { 90 | source: options.source, 91 | rules: rulesList, 92 | parsingErrors: errorsList 93 | } 94 | }; 95 | } 96 | 97 | /** 98 | * Opening brace. 99 | */ 100 | 101 | function open() { 102 | return match(/^{\s*/); 103 | } 104 | 105 | /** 106 | * Closing brace. 107 | */ 108 | 109 | function close() { 110 | return match(/^}/); 111 | } 112 | 113 | /** 114 | * Parse ruleset. 115 | */ 116 | 117 | function rules() { 118 | var node; 119 | var rules = []; 120 | whitespace(); 121 | comments(rules); 122 | while (css.length && css.charAt(0) != '}' && (node = atrule() || rule())) { 123 | if (node !== false) { 124 | rules.push(node); 125 | comments(rules); 126 | } 127 | } 128 | return rules; 129 | } 130 | 131 | /** 132 | * Match `re` and return captures. 133 | */ 134 | 135 | function match(re) { 136 | var m = re.exec(css); 137 | if (!m) return; 138 | var str = m[0]; 139 | updatePosition(str); 140 | css = css.slice(str.length); 141 | return m; 142 | } 143 | 144 | /** 145 | * Parse whitespace. 146 | */ 147 | 148 | function whitespace() { 149 | match(/^\s*/); 150 | } 151 | 152 | /** 153 | * Parse comments; 154 | */ 155 | 156 | function comments(rules) { 157 | var c; 158 | rules = rules || []; 159 | while (c = comment()) { 160 | if (c !== false) { 161 | rules.push(c); 162 | } 163 | } 164 | return rules; 165 | } 166 | 167 | /** 168 | * Parse comment. 169 | */ 170 | 171 | function comment() { 172 | var pos = position(); 173 | if ('/' != css.charAt(0) || '*' != css.charAt(1)) return; 174 | 175 | var i = 2; 176 | while ("" != css.charAt(i) && ('*' != css.charAt(i) || '/' != css.charAt(i + 1))) ++i; 177 | i += 2; 178 | 179 | if ("" === css.charAt(i-1)) { 180 | return error('End of comment missing'); 181 | } 182 | 183 | var str = css.slice(2, i - 2); 184 | column += 2; 185 | updatePosition(str); 186 | css = css.slice(i); 187 | column += 2; 188 | 189 | return pos({ 190 | type: 'comment', 191 | comment: str 192 | }); 193 | } 194 | 195 | /** 196 | * Parse selector. 197 | */ 198 | 199 | function selector() { 200 | var m = match(/^([^{]+)/); 201 | if (!m) return; 202 | /* @fix Remove all comments from selectors 203 | * http://ostermiller.org/findcomment.html */ 204 | return trim(m[0]) 205 | .replace(/\/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*\/+/g, '') 206 | .replace(/"(?:\\"|[^"])*"|'(?:\\'|[^'])*'/g, function(m) { 207 | return m.replace(/,/g, '\u200C'); 208 | }) 209 | .split(/\s*(?![^(]*\)),\s*/) 210 | .map(function(s) { 211 | return s.replace(/\u200C/g, ','); 212 | }); 213 | } 214 | 215 | /** 216 | * Parse declaration. 217 | */ 218 | 219 | function declaration() { 220 | var pos = position(); 221 | 222 | // prop 223 | var prop = match(/^(\*?[-#\/\*\\\w]+(\[[0-9a-z_-]+\])?)\s*/); 224 | if (!prop) return; 225 | prop = trim(prop[0]); 226 | 227 | // : 228 | if (!match(/^:\s*/)) return error("property missing ':'"); 229 | 230 | // val 231 | var val = match(/^((?:'(?:\\'|.)*?'|"(?:\\"|.)*?"|$[^$]*?\)|[^};])+)/); 232 | 233 | var ret = pos({ 234 | type: 'declaration', 235 | property: prop.replace(commentre, ''), 236 | value: val ? trim(val[0]).replace(commentre, '') : '' 237 | }); 238 | 239 | // ; 240 | match(/^[;\s]*/); 241 | 242 | return ret; 243 | } 244 | 245 | /** 246 | * Parse declarations. 247 | */ 248 | 249 | function declarations() { 250 | var decls = []; 251 | 252 | if (!open()) return error("missing '{'"); 253 | comments(decls); 254 | 255 | // declarations 256 | var decl; 257 | while (decl = declaration()) { 258 | if (decl !== false) { 259 | decls.push(decl); 260 | comments(decls); 261 | } 262 | } 263 | 264 | if (!close()) return error("missing '}'"); 265 | return decls; 266 | } 267 | 268 | /** 269 | * Parse keyframe. 270 | */ 271 | 272 | function keyframe() { 273 | var m; 274 | var vals = []; 275 | var pos = position(); 276 | 277 | while (m = match(/^((\d+\.\d+|\.\d+|\d+)%?|[a-z]+)\s*/)) { 278 | vals.push(m[1]); 279 | match(/^,\s*/); 280 | } 281 | 282 | if (!vals.length) return; 283 | 284 | return pos({ 285 | type: 'keyframe', 286 | values: vals, 287 | declarations: declarations() 288 | }); 289 | } 290 | 291 | /** 292 | * Parse keyframes. 293 | */ 294 | 295 | function atkeyframes() { 296 | var pos = position(); 297 | var m = match(/^@([-\w]+)?keyframes\s*/); 298 | 299 | if (!m) return; 300 | var vendor = m[1]; 301 | 302 | // identifier 303 | var m = match(/^([-\w]+)\s*/); 304 | if (!m) return error("@keyframes missing name"); 305 | var name = m[1]; 306 | 307 | if (!open()) return error("@keyframes missing '{'"); 308 | 309 | var frame; 310 | var frames = comments(); 311 | while (frame = keyframe()) { 312 | frames.push(frame); 313 | frames = frames.concat(comments()); 314 | } 315 | 316 | if (!close()) return error("@keyframes missing '}'"); 317 | 318 | return pos({ 319 | type: 'keyframes', 320 | name: name, 321 | vendor: vendor, 322 | keyframes: frames 323 | }); 324 | } 325 | 326 | /** 327 | * Parse supports. 328 | */ 329 | 330 | function atsupports() { 331 | var pos = position(); 332 | var m = match(/^@supports *([^{]+)/); 333 | 334 | if (!m) return; 335 | var supports = trim(m[1]); 336 | 337 | if (!open()) return error("@supports missing '{'"); 338 | 339 | var style = comments().concat(rules()); 340 | 341 | if (!close()) return error("@supports missing '}'"); 342 | 343 | return pos({ 344 | type: 'supports', 345 | supports: supports, 346 | rules: style 347 | }); 348 | } 349 | 350 | /** 351 | * Parse host. 352 | */ 353 | 354 | function athost() { 355 | var pos = position(); 356 | var m = match(/^@host\s*/); 357 | 358 | if (!m) return; 359 | 360 | if (!open()) return error("@host missing '{'"); 361 | 362 | var style = comments().concat(rules()); 363 | 364 | if (!close()) return error("@host missing '}'"); 365 | 366 | return pos({ 367 | type: 'host', 368 | rules: style 369 | }); 370 | } 371 | 372 | /** 373 | * Parse media. 374 | */ 375 | 376 | function atmedia() { 377 | var pos = position(); 378 | var m = match(/^@media *([^{]+)/); 379 | 380 | if (!m) return; 381 | var media = trim(m[1]); 382 | 383 | if (!open()) return error("@media missing '{'"); 384 | 385 | var style = comments().concat(rules()); 386 | 387 | if (!close()) return error("@media missing '}'"); 388 | 389 | return pos({ 390 | type: 'media', 391 | media: media, 392 | rules: style 393 | }); 394 | } 395 | 396 | 397 | /** 398 | * Parse custom-media. 399 | */ 400 | 401 | function atcustommedia() { 402 | var pos = position(); 403 | var m = match(/^@custom-media\s+(--[^\s]+)\s*([^{;]+);/); 404 | if (!m) return; 405 | 406 | return pos({ 407 | type: 'custom-media', 408 | name: trim(m[1]), 409 | media: trim(m[2]) 410 | }); 411 | } 412 | 413 | /** 414 | * Parse paged media. 415 | */ 416 | 417 | function atpage() { 418 | var pos = position(); 419 | var m = match(/^@page */); 420 | if (!m) return; 421 | 422 | var sel = selector() || []; 423 | 424 | if (!open()) return error("@page missing '{'"); 425 | var decls = comments(); 426 | 427 | // declarations 428 | var decl; 429 | while (decl = declaration()) { 430 | decls.push(decl); 431 | decls = decls.concat(comments()); 432 | } 433 | 434 | if (!close()) return error("@page missing '}'"); 435 | 436 | return pos({ 437 | type: 'page', 438 | selectors: sel, 439 | declarations: decls 440 | }); 441 | } 442 | 443 | /** 444 | * Parse document. 445 | */ 446 | 447 | function atdocument() { 448 | var pos = position(); 449 | var m = match(/^@([-\w]+)?document *([^{]+)/); 450 | if (!m) return; 451 | 452 | var vendor = trim(m[1]); 453 | var doc = trim(m[2]); 454 | 455 | if (!open()) return error("@document missing '{'"); 456 | 457 | var style = comments().concat(rules()); 458 | 459 | if (!close()) return error("@document missing '}'"); 460 | 461 | return pos({ 462 | type: 'document', 463 | document: doc, 464 | vendor: vendor, 465 | rules: style 466 | }); 467 | } 468 | 469 | /** 470 | * Parse font-face. 471 | */ 472 | 473 | function atfontface() { 474 | var pos = position(); 475 | var m = match(/^@font-face\s*/); 476 | if (!m) return; 477 | 478 | if (!open()) return error("@font-face missing '{'"); 479 | var decls = comments(); 480 | 481 | // declarations 482 | var decl; 483 | while (decl = declaration()) { 484 | decls.push(decl); 485 | decls = decls.concat(comments()); 486 | } 487 | 488 | if (!close()) return error("@font-face missing '}'"); 489 | 490 | return pos({ 491 | type: 'font-face', 492 | declarations: decls 493 | }); 494 | } 495 | 496 | /** 497 | * Parse import 498 | */ 499 | 500 | var atimport = _compileAtrule('import'); 501 | 502 | /** 503 | * Parse charset 504 | */ 505 | 506 | var atcharset = _compileAtrule('charset'); 507 | 508 | /** 509 | * Parse namespace 510 | */ 511 | 512 | var atnamespace = _compileAtrule('namespace'); 513 | 514 | /** 515 | * Parse non-block at-rules 516 | */ 517 | 518 | 519 | function _compileAtrule(name) { 520 | var re = new RegExp('^@' + name + '\\s*([^;]+);'); 521 | return function() { 522 | var pos = position(); 523 | var m = match(re); 524 | if (!m) return; 525 | var ret = { type: name }; 526 | ret[name] = m[1].trim(); 527 | return pos(ret); 528 | } 529 | } 530 | 531 | /** 532 | * Parse at rule. 533 | */ 534 | 535 | function atrule() { 536 | if (css[0] != '@') return; 537 | 538 | return atkeyframes() 539 | || atmedia() 540 | || atcustommedia() 541 | || atsupports() 542 | || atimport() 543 | || atcharset() 544 | || atnamespace() 545 | || atdocument() 546 | || atpage() 547 | || athost() 548 | || atfontface(); 549 | } 550 | 551 | /** 552 | * Parse rule. 553 | */ 554 | 555 | function rule() { 556 | var pos = position(); 557 | var sel = selector(); 558 | 559 | if (!sel) return error('selector missing'); 560 | comments(); 561 | 562 | return pos({ 563 | type: 'rule', 564 | selectors: sel, 565 | declarations: declarations() 566 | }); 567 | } 568 | 569 | return addParent(stylesheet()); 570 | }; 571 | 572 | /** 573 | * Trim `str`. 574 | */ 575 | 576 | function trim(str) { 577 | return str ? str.replace(/^\s+|\s+$/g, '') : ''; 578 | } 579 | 580 | /** 581 | * Adds non-enumerable parent node reference to each node. 582 | */ 583 | 584 | function addParent(obj, parent) { 585 | var isNode = obj && typeof obj.type === 'string'; 586 | var childParent = isNode ? obj : parent; 587 | 588 | for (var k in obj) { 589 | var value = obj[k]; 590 | if (Array.isArray(value)) { 591 | value.forEach(function(v) { addParent(v, childParent); }); 592 | } else if (value && typeof value === 'object') { 593 | addParent(value, childParent); 594 | } 595 | } 596 | 597 | if (isNode) { 598 | Object.defineProperty(obj, 'parent', { 599 | configurable: true, 600 | writable: true, 601 | enumerable: false, 602 | value: parent || null 603 | }); 604 | } 605 | 606 | return obj; 607 | } 608 | -------------------------------------------------------------------------------- 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