nav属性详解,定制Bootstrap遇到无法下载的解决

role=”navigation”这个可以增强可访问性。

  1 html {    2   font-family: sans-serif;    3   -webkit-text-size-adjust: 100%;    4       -ms-text-size-adjust: 100%;    5 }    6 body {    7   margin: 0;    8 }    9 article,   10 aside,   11 details,   12 figcaption,   13 figure,   14 footer,   15 header,   16 hgroup,   17 main,   18 nav,   19 section,   20 summary {   21   display: block;   22 }   23 audio,   24 canvas,   25 progress,   26 video {   27   display: inline-block;   28   vertical-align: baseline;   29 }   30 audio:not([controls]) {   31   display: none;   32   height: 0;   33 }   34 [hidden],   35 template {   36   display: none;   37 }   38 a {   39   background: transparent;   40 }   41 a:active,   42 a:hover {   43   outline: 0;   44 }   45 abbr[title] {   46   border-bottom: 1px dotted;   47 }   48 b,   49 strong {   50   font-weight: bold;   51 }   52 dfn {   53   font-style: italic;   54 }   55 h1 {   56   margin: .67em 0;   57   font-size: 2em;   58 }   59 mark {   60   color: #000;   61   background: #ff0;   62 }   63 small {   64   font-size: 80%;   65 }   66 sub,   67 sup {   68   position: relative;   69   font-size: 75%;   70   line-height: 0;   71   vertical-align: baseline;   72 }   73 sup {   74   top: -.5em;   75 }   76 sub {   77   bottom: -.25em;   78 }   79 img {   80   border: 0;   81 }   82 svg:not(:root) {   83   overflow: hidden;   84 }   85 figure {   86   margin: 1em 40px;   87 }   88 hr {   89   height: 0;   90   -moz-box-sizing: content-box;   91        box-sizing: content-box;   92 }   93 pre {   94   overflow: auto;   95 }   96 code,   97 kbd,   98 pre,   99 samp {  100   font-family: monospace, monospace;  101   font-size: 1em;  102 }  103 button,  104 input,  105 optgroup,  106 select,  107 textarea {  108   margin: 0;  109   font: inherit;  110   color: inherit;  111 }  112 button {  113   overflow: visible;  114 }  115 button,  116 select {  117   text-transform: none;  118 }  119 button,  120 html input[type="button"],  121 input[type="reset"],  122 input[type="submit"] {  123   -webkit-appearance: button;  124   cursor: pointer;  125 }  126 button[disabled],  127 html input[disabled] {  128   cursor: default;  129 }  130 button::-moz-focus-inner,  131 input::-moz-focus-inner {  132   padding: 0;  133   border: 0;  134 }  135 input {  136   line-height: normal;  137 }  138 input[type="checkbox"],  139 input[type="radio"] {  140   box-sizing: border-box;  141   padding: 0;  142 }  143 input[type="number"]::-webkit-inner-spin-button,  144 input[type="number"]::-webkit-outer-spin-button {  145   height: auto;  146 }  147 input[type="search"] {  148   -webkit-box-sizing: content-box;  149      -moz-box-sizing: content-box;  150           box-sizing: content-box;  151   -webkit-appearance: textfield;  152 }  153 input[type="search"]::-webkit-search-cancel-button,  154 input[type="search"]::-webkit-search-decoration {  155   -webkit-appearance: none;  156 }  157 fieldset {  158   padding: .35em .625em .75em;  159   margin: 0 2px;  160   border: 1px solid #c0c0c0;  161 }  162 legend {  163   padding: 0;  164   border: 0;  165 }  166 textarea {  167   overflow: auto;  168 }  169 optgroup {  170   font-weight: bold;  171 }  172 table {  173   border-spacing: 0;  174   border-collapse: collapse;  175 }  176 td,  177 th {  178   padding: 0;  179 }  180 @media print {  181   * {  182     color: #000 !important;  183     text-shadow: none !important;  184     background: transparent !important;  185     box-shadow: none !important;  186   }  187   a,  188   a:visited {  189     text-decoration: underline;  190   }  191   a[href]:after {  192     content: " (" attr(href) ")";  193   }  194   abbr[title]:after {  195     content: " (" attr(title) ")";  196   }  197   a[href^="javascript:"]:after,  198   a[href^="#"]:after {  199     content: "";  200   }  201   pre,  202   blockquote {  203     border: 1px solid #999;  204   205     page-break-inside: avoid;  206   }  207   thead {  208     display: table-header-group;  209   }  210   tr,  211   img {  212     page-break-inside: avoid;  213   }  214   img {  215     max-width: 100% !important;  216   }  217   p,  218   h2,  219   h3 {  220     orphans: 3;  221     widows: 3;  222   }  223   h2,  224   h3 {  225     page-break-after: avoid;  226   }  227   select {  228     background: #fff !important;  229   }  230   .navbar {  231     display: none;  232   }  233   .table td,  234   .table th {  235     background-color: #fff !important;  236   }  237   .btn > .caret,  238   .dropup > .btn > .caret {  239     border-top-color: #000 !important;  240   }  241   .label {  242     border: 1px solid #000;  243   }  244   .table {  245     border-collapse: collapse !important;  246   }  247   .table-bordered th,  248   .table-bordered td {  249     border: 1px solid #ddd !important;  250   }  251 }
blob:http%3A//v3.bootcss.com/e718dd26-ba80-498d-8be9-0fc6d2d6c7bf

 


把浏览器的下载设置改成用自带的下载,问题解决。

源码看着多就不一一分析了。

 

一下子就豁然开朗了,这个数据是前台生成的,只在该网页的Context内有效,用迅雷下载当然找不到文件,因为它只存在于那个网页的前台中!


4.用百度搜索“blob:http%3A//”,搜到这一篇文章,直接CTRL+F看了一下有关这个关键词的部分:

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