.arrow中的转换值在这里似乎没有任何作用。有人可以解释我为什么
<!doctype html>
<html>
<head>
<style>
.container{
height:500px;
width:600px;
}
.header{ height:40px; }
.step{width:194px;float:left; border:1px solid black; height:40px;}
.arrow{display:inline-block;width:25px; height:25px; border-left:1px solid
black; border-bottom: 1px solid black;-webkit-transform:translateY(20px);
transform:rotate(-135deg); }
</style>
</head>
<body>
<div class='container'>
<div class='header'>
<div class='step'> step 1 <div class='arrow'> </div></div>
<div class='step'> step 2 <div class='arrow'> </div></div>
<div class='step'> step 3 <div class='arrow'> </div></div>
<div class='body'> </div>
</div>
最佳答案
您应该将两个值都添加到同一个transform属性（例如transform: translateY(20px) rotate(-135deg)）中，否则，由于CSS级联规则，将仅考虑最后一个：
.container {
height: 500px;
width: 600px;
}
.header {
height: 40px;
}
.step {
width: 194px;
float: left;
border: 1px solid;
height: 40px;
}
.arrow {
display: inline-block;
width: 25px;
height: 25px;
border-left: 1px solid;
border-bottom: 1px solid;
transform: translateY(20px) rotate(-135deg);
}<div class='container'>
<div class='header'>
<div class='step'> step 1 <div class='arrow'> </div></div>
<div class='step'> step 2 <div class='arrow'> </div></div>
<div class='step'> step 3 <div class='arrow'> </div></div>
<div class='body'></div>
</div>