左侧定宽，右侧自适应，两列布局且等高

.container{
        overflow: hidden;
}
.con-left{
    float: left;
    width: 200px;
    background-color: red;
    background:#d3daf8 ;
    position: relative;
    /*margin-bottom: -99999px;
    padding-bottom: 99999px;*/
    /*这是两列高度对齐代码*/
}
.con-right{
    margin-left: 200px;
    position: relative;
    /*margin-bottom: -99999px;
    padding-bottom: 99999px;*/
}