1、工具/原料 html css 2、具体实现 效果图 html代码 body h1 style=color: redcss实现矩形边角加粗/h1 div class=main span/span span/span span/span span/span /div/body css代码 body{ display: flex; justify-content: center;
1、工具/原料
- html
- css
2、具体实现
效果图
html代码
<body> <h1 style="color: red">css实现矩形边角加粗</h1> <div class="main"> <span></span> <span></span> <span></span> <span></span> </div> </body>
css代码
body{ display: flex; justify-content: center; flex-direction: column; align-items: center; } .main{ position: relative; width: 400px; height: 200px; border: 1px solid red; } .main span:nth-child(1){ position: absolute; left: -5px; top: -5px; padding: 15px; border-style: solid; border-color: rebeccapurple; border-width: 5px 0 0 5px; } .main span:nth-child(2){ position: absolute; right: -5px; top: -5px; padding: 15px; border-style: solid; border-color: rebeccapurple; border-width: 5px 5px 0 0; } .main span:nth-child(3){ position: absolute; right: -5px; bottom: -5px; padding: 15px; border-style: solid; border-color: rebeccapurple; border-width: 0 5px 5px 0; } .main span:nth-child(4){ position: absolute; left: -5px; bottom: -5px; padding: 15px; border-style: solid; border-color: rebeccapurple; border-width: 0 0 5px 5px; }
原理很简单, 只要弄清position:relative,border和left,top之间的关系就可以了
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