newICSS/src/components/Preview/index.less

.container {
  position: relative;
  z-index: 2000;
  .shade {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background-color: #000;
    opacity: 0.6;
    filter:alpha(opacity=60);
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(opacity=60);";
  }
  .modal {
    width: 820px;
    background: #fff;
    position: fixed;
    left: 50%;
    margin-left: -410px;
    top: 7%;  
    bottom: 7%;
    height: 86%;
    overflow: hidden;
    padding-top: 45px;
  }
  .close { 
    padding:  0 15px;
    height: 45px;
    line-height: 45px;
    border-bottom: 1px solid #EAEDF1;
    position: absolute;
    width: 100%;
    top: 0;
    img{
      float:right;
      cursor: pointer;
      margin-top: 10px;
    }
  }
}