在div块状元素中再添加两个div元素，这样做对吗
div{
border:2px red solid;
}
.1{
width:200px;
height:200px;
float:left;
position:relative;
}
.4{
width:200px;
height:200px;
float:right;
}
.2{
width:100px;
height:200px;
position:absolute;
left:0px;
}
.3{
width:90px;
height:200px;
position:absolute;
right:10px;
}
</style>
</head>
<body>
<div class="1">
<div class="2">2</div>
<div class="3">3</div>
</div>
<div class="4"></div>在Dreamwweaver中这样显示，可在360浏览器中却显示很奇怪，这样用相对定位正确吗
