jilingxf

Web前端基础精品入门（HTML+CSS+JavaScript+JS）[爱前端]听课笔记3：三角形的制作

菜单中有的项目有夏季菜单，需要添加一个三角形，这个三角形是利用两个边框不同颜色产生的楔形制作的

image

设置盒子的高度和宽度均为0，边框合适的大小，透明颜色，对应边设置高度、颜色


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>三角形</title>
    <style type="text/css">
        .sjx{
            width:0px;
            height:0px;
            border: 10px solid transparent;
            border-top: 10px solid red;
        }
    </style>

</head>
<body>
    <div class="sjx"></div>
</body>
</html>


几个变形如下


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>三角形</title>
    <style type="text/css">
        .sjx{
            width:0px;
            height:0px;
            border: 10px solid transparent;
            border-top: 10px solid red;
        }
        .sjx_left{
            width:0px;
            height:0px;
            border: 10px solid transparent;
            border-left: 10px solid red;
        }
        .sjx_bottom{
            width:0px;
            height:0px;
            border: 10px solid transparent;
            border-bottom: 10px solid red;
        }
        .sjx_right{
            width:0px;
            height:0px;
            border: 10px solid transparent;
            border-right: 10px solid red;
        }
        .sjx_widen{
            width:0px;
            height:0px;
            border: 20px solid transparent;
            border-top: 10px solid red;
        }
        .sjx_height{
            width:0px;
            height:0px;
            border: 10px solid transparent;
            border-top: 20px solid red;
        }
    </style>

</head>
<body>
    上三角
    <div class="sjx"></div>
    左三角
    <div class="sjx_left"></div>
    底三角
    <div class="sjx_bottom"></div>
    右三角
    <div class="sjx_right"></div>
    上三角变宽
    <div class="sjx_widen"></div>
    上三角变高
    <div class="sjx_height"></div>
</body>
</html>

最终的效果如下：

image

posted on 2022-04-30 10:57  jilingxf  阅读(217)  评论(0)  编辑  收藏  举报

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