html radio样式（利用纯CSS自定义Checkbox和Radio的样式示例代码）

// radio input
<li class="radio">
    <input id="male" type="radio" name="gender" value="male">
    <label for="male">Male</label>
    <input id="female" type="radio" name="gender" value="female">
    <label for="female">Female</label>
</li>


// checkbox input
<li class="checkbox">
    <input id="check1" type="checkbox" name="check" value="check1">
    <label for="check1">Checkbox No. 1</label>

    <input id="check2" type="checkbox" name="check" value="check2">
    <label for="check2">Checkbox No. 2</label>
</li>

label {
    display: inline-block;
    cursor: pointer;
    position: relative;
    padding-left: 25px;
    margin-right: 15px;
    font-size: 13px;
}

label:before {
    content: "";
    display: inline-block;

    width: 16px;
    height: 16px;

    margin-right: 10px;
    position: absolute;
    left: 0;
    bottom: 1px;
    background-color: #aaa;
    box-shadow: inset 0px 2px 3px 0px rgba(0, 0, 0, .3), 0px 1px 0px 0px rgba(255, 255, 255, .8);
}

.radio label:before {
    border-radius: 8px;
}
.checkbox label:before {
    border-radius: 3px;
}


input[type=radio],
input[type=checkbox] {
    display: none;
}

input[type=radio]:checked + label:before {
    content: "\2022";
    color: #f3f3f3;
    font-size: 30px;
    text-align: center;
    line-height: 18px;
}
input[type=checkbox]:checked + label:before {
    content: "\2713";
    text-shadow: 1px 1px 1px rgba(0, 0, 0, .2);
    font-size: 15px;
    color: #f3f3f3;
    text-align: center;
    line-height: 15px;
}