text-indent:0为什么就显示出数字了？什么意思？
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>点击事件</title>
<style type="text/css">
div {
float: left;
margin: 10px;
width: 100px;
height: 100px;
color: #fff;
font-size: 50px;
text-align: center;
line-height: 100px;
text-indent: -9999px;
background-color: #333;
}
</style>
</head>
<body>
<h1>添加事件处理</h1>
<div>43</div>
<div>21</div>
<div>56</div>
<div>16</div>
<div>89</div>
<div>94</div>
<div>46</div>
<div>26</div>
<div>67</div>
<div>90</div>
<div>25</div>
<div>10</div>
<div>84</div>
<div>76</div>
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.js"></script>
<script>
//此处写代码
$(document).ready(function(){
$("div").click(function(){
$(this).css({"text-indent":"0"});
})
})
</script>
</body>
</html>
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