纯CSS3美化radio和checkbox_html/css_WEB-ITnose

<label for="test1">Test for test1 </label>        <input class="radio" type="radio" ID="test1" name="test" value="test1"/>        <label for="test2">Test for test2 </label>        <input class="radio" type="radio" ID="test2" name="test" value="test2"/>        <br>        <br>        <br>        <label for="check1">check1</label>        <input id="check1" name="check"  value="check1" type="checkbox" class="checkbox"/>        <label for="check2">check2</label>        <input id="check2" name="check" value="check2" type="checkbox" class="checkbox"/>        <label for="check3">check3</label>        <input id="check3" name="check" value="check3" type="checkbox" class="checkbox"/>        <label for="check4">check4</label>        <input id="check4" name="check" value="check4" type="checkbox" class="checkbox"/>

input[type=radio]{            font-size:1em;            visibility: hidden;            position: relative;            display: inline-block;            width: 1em;            height: 1em;        }        input[type=radio]:before{            font-size:1em;            top:12%;            display: inline-block;            position: absolute;            content:' ';            visibility: visible;            height: 1em;            width: 1em;            display: block;            background: url("../img/no.png") no-repeat;            background-size: 1em 1em;        }        input[type=radio]:checked:before{            font-size:1em;            content:' ';            visibility: visible;            height: 1em;            width: 1em;            background: url("../img/yes.png") no-repeat;            background-size: 1em 1em;        }        input[type=checkbox]{            font-size:1em;            visibility: hidden;            position: relative;            display: inline-block;            width: 1em;            height: 1em;        }        input[type=checkbox]:before{            top:12%;            display: inline-block;            position: absolute;            content:' ';            visibility: visible;            height: 1em;            width: 1em;            display: block;            background: url("../img/checkbox_no.png") no-repeat;            background-size: 1em 1em;        }        input[type=checkbox]:checked:before{            content:' ';            visibility: visible;            height: 1em;            width: 1em;            background: url("../img/checkbox.png") no-repeat;            background-size: 1em 1em;        }