盒子,border盒子border的三要素：宽，形状，颜色。
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>border边框</title> <style> #mydiv{ height:200px; width:100px; background:black; border:10px solid yellow; } </style> </head> <body> <div id="mydiv">border的三要素:宽 形状 颜色</div> </body> </html> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>border边框</title> <style> #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- } </style> </head> <body> <div id="mydiv"></div> </body> </html>
盒子,border
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