分享一段代码：
<!DOCTYPE html>
<html lang="en">
<head>
<!--单选框样式-->
<Meta charset="UTF-8">
<title>Title</title>
<style type="text/css">
.choice{
position: relative;
}
.choice .radio{
position: relative;
display: inline-block;
font-weight: 400;
color: #0c4757;
padding-left: 25px;
cursor: pointer;
}
.choice .radio input{
position: absolute;
left: -9999px;
}
.choice .radio i{
display: block;
position: absolute;
top: 6px;
left: 0;
width: 15px;
height: 15px;
outline: 0;
border: 1px solid #666;
border-radius: 50%;
transition: border-color .3s;
-webkit-transition: border-color .3s;
}
.choice .radio input:checked+i{
border-color: #0c4757;
}
.choice .radio input+i:after{
position: absolute;
content: '';
top: 0;
left: 0;
width: 100%;
height: 100%;
border-radius: 50%;
background-color: red;
opacity: 0;
transition: opacity .1s;
-webkit-transition: opacity .1s;
}
.choice .radio input:checked+i:after{
opacity: 1;
}
</style>
</head>
<body>
<div class="choice">
<label class="radio">在校生<input type="radio" name="radio" value="1" checked><i></i></label>
<label class="radio">非在校生<input type="radio" value="2" name="radio"><i></i></label>
</div>
</body>
</html>
