HTML
<ul class="box">
<li>
<input type="checkbox" name="vehicle" id="vehicle">
<label for="vehicle">第一个选项</label>
</li>
<li>
<input type="checkbox" name="vehicle" id="vehicle2">
<label for="vehicle2">第二个选项</label>
</li>
</ul>
CSS
ul,
li {
padding:;
margin:;
list-style: none;
} .box input[type="checkbox"] {
width: 12px;
height: 12px;
border: 1px solid #e2e2e2;
background: none;
box-shadow: none;
} .box input[type="checkbox"] {
-webkit-appearance: none;
appearance: none;
display: inline-block;
margin: 0 2px 2px 0;
width: 12px;
height: 12px;
cursor: pointer;
outline: none;
vertical-align: middle;
border: 1px solid #e2e2e2;
} .box input:checked {
border: 1px solid #13af13;
}
.box input:checked::before {
content: "";
display: block;
position: relative;
width: 3px;
height: 6px;
left: 34%;
top: 9%;
border-right: 1px solid #13af13;
border-bottom: 1px solid #13af13;
transform: rotate(45deg);
background: none;
}