复制代码代码如下:
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
#mydiv{
height:200px;
width:100px;
background:black;
border:10px solid yellow;
}
border的三要素:宽 形状 颜色
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
#mydiv{
height:0px;
width:0px;
border-top: 50px solid white;
border-right: 50px solid white;
border-left: 50px solid white;
border-bottom: 50px solid blue;
border-
}
