左侧固定 右侧自适应两栏布局
<!DOCTYPE html><html><head><style>div{height:300px;}#demo1{padding-left:300px;background-color:black;}#fix-demo1{margin-left:-300px;width:300px;background-color:red;float:left;_margin-left:-150px;}#auto-width1{width:100%;background-color:yellow;float:left;}</style></head><body><div id="demo1"><div id="fix-demo1">my width is fixed 300</div><div id="auto-width1">my width is auto</div></div></body></html>?