CSS display布局之flex布局

        <div class="display-flex">
            <div class="box1">                
            </div>
            <div class="box2">                
            </div>
        </div>

          .display-flex {
              position: relative;
              height: 100px;
              display: box;
              display: -webkit-box;
              display: -webkit-flex;
              display: flex;         
          }
          .box1 {
              width: 200px;
              background: lightblue;
          }
          .box2 {
            -webkit-box-flex: 1;            
            box-flex: 1;
            -webkit-flex:1;
            flex:1;    
            background: lightseagreen;
          }