.list-content{ position: relative; overflow: hidden; }
.list-left{ width: 20%; position: fixed;  height: 80%;  top:3em;overflow: auto; }
.list-right{ float: right; width: 79%;padding-bottom: 50px; position: fixed;left:20%;top:3em;overflow: auto;height:80%;}
.list-left1{ width: 100%; position: fixed;  height: 90%;  top:3em;  overflow: auto; }
.list-left2{ width: 100%; position: fixed;  height: 80%;  top:3em;  overflow: auto; }
.list-left3{ width: 100%; position: fixed;  height: 90%;  top:3em;  overflow: auto; }
.list-left4{ width: 100%; position: fixed;  height: 84%;  top:3em;  overflow: auto; }
.list-left5{ width: 100%; position: fixed;  height: 94%;  top:3em;  overflow: auto; }
.list-left6{ width: 100%; position: fixed;  height: 92%;  top:3em;  overflow: auto; }