纯css3实现多选框和单选框的样式改变，简单实用
<html><head>
<style id="jsbin-css">
input[type=checkbox] {
margin-right: 5px;
cursor: pointer;
font-size: 14px;
width: 15px;
height: 12px;
position: relative;
}
input[type=checkbox] {
margin-right: 5px;
cursor: pointer;
font-size: 14px;
width: 15px;
height: 12px;
position: relative;
}
input[type=checkbox]:after {
position: absolute;
width: 10px;
height: 15px;
top: 0;
content: " ";
background-color: #ff0000;
color: #fff;
display: inline-block;
visibility: visible;
padding: 0px 3px;
border-radius: 3px;
}
input[type=checkbox]:checked:after {
content: "✓";
font-size: 12px;
}
input[type=checkbox]:after {
position: absolute;
width: 10px;
height: 15px;
top: 0;
content: " ";
background-color: #ff0000;
color: #fff;
display: inline-block;
visibility: visible;
padding: 0px 3px;
border-radius: 3px;
}
input[type=checkbox]:checked:after {
content: "✓";
font-size: 12px;
}
input[type=radio] {
margin-right: 5px;
cursor: pointer;
font-size: 14px;
width: 15px;
height: 12px;
position: relative;
}
input[type=radio]:after {
position: absolute;
width: 10px;
height: 15px;
top: 0;
content: " ";
background-color: #ff0000;
color: #fff;
display: inline-block;
visibility: visible;
padding: 0px 3px;
border-radius: 50%;
}
input[type=radio]:checked:before {
content: "✓";
display: block;
position: relative;
top: -2px;
left: 3px;
width: 6px;
height: 6px;
color: #fff;
font-weight: 400;
z-index: 1;
}
</style>
</head><body><input type="checkbox" name="method" value="plus" checked="">plus<br>
<input type="checkbox" name="method" value="minus">minus<br>
<input type="radio" name="method" value="plus">plus<br>
<input type="radio" name="method" value="minus" checked="">minus<br></body></html>
