制作一个向右的箭头

1.首先写好一个盒子，分别设置好它的上下左右边距的宽度，样式，颜色

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        .box{
            width: 100px;
            height: 100px;
            margin-left: 100px;
            margin-top: 100px;
            background-color: white;
            border-top: 100px solid red;
            border-bottom: 100px solid yellow;
            border-left: 100px solid orange;
            border-right: 100px solid green;


        }
    </style>
</head>
<body>
<div class="box"></div>
</body>
</html>

2.把盒子的宽度和高度设置为0

width:0;
height:0;

3.要想产生一个向右的箭头，即把上下左的边距的颜色都设置为透明色

border-top:100px solid transparent;
border-bottom:100px solid transparent;
border-left:100px solid orange;
border-right:100px solid transparent;