常用的css-fix

把经常用到的css属性设置为class，需要的时候引入即可。

• 将元素设置为block并且水平居中

  .center-block {
    display: block;
    margin-right: auto;
    margin-left: auto;
  }
  

• 让文字不可换行，超越边界的文字显示为省略号

  .text-nowrap {
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
  }
  

• 让文字隐藏

  .text-hide {
    font: 0/0 a;
    color: transparent;
    text-shadow: none;
    background-color: transparent;
    border: 0;
  }
  

• 清除浮动，并且禁止margin重叠

  .clearfix:after,
  .clearfix:before {
    content: "";
    display: table;
  }
  .clearfix:after {
    clear: both;
  }
  

• 淘宝的CSS reset

  body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, form, fieldset, legend, button, input, textarea, th, td { margin:0; padding:0; }
  body, button, input, select, textarea { font:12px/1.5tahoma, arial, \5b8b\4f53; }
  h1, h2, h3, h4, h5, h6{ font-size:100%; }
  address, cite, dfn, em, var { font-style:normal; }
  code, kbd, pre, samp { font-family:couriernew, courier, monospace; }
  small{ font-size:12px; }
  ul, ol { list-style:none; }
  a { text-decoration:none; }
  a:hover { text-decoration:underline; }
  sup { vertical-align:text-top; }
  sub{ vertical-align:text-bottom; }
  legend { color:#000; }
  fieldset, img { border:0; }
  button, input, select, textarea { font-size:100%; }
  table { border-collapse:collapse; border-spacing:0; }