答案 0 :(得分:0)
我认为这就是你要找的......
.border1{
width:100px;
height:100px;
border-left: 10px solid #ccc;
}
.border2{
width: 100px;
height: 100px;
display: block;
margin-left: 15px;
border-left: 3px solid #ccc;
}

<div class="border1">
<div class="border2"></div>
</div>
&#13;
检查并告诉我你是否还想要其他东西..