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;*/
}