css 能改变input type radio和checkbox 圆圈或方框的大小

把input隐藏，外面套label，再里面加个span，样式写在span上，让label覆盖在span上面，js去改active的class

<label for="remember" class="text-muted"><span class="circle-btn"></span><input type="radio"   />记住密码</label>

label {
    -webkit-user-select: none;
}
.circle-btn {
    width: 18px;
    height: 18px;
    border-radius: 100%;
    border: 1px solid #808080;
    transition: all 0.4s;
    -moz-transition: all 0.4s ease;
    -o-transition: all 0.4s ease;
    -webkit-transition: all 0.4s ease;
    transition: all 0.4s ease;
    display: inline-block;
    vertical-align: middle;
    margin: -4px 3px 0 0;
}
.circle-btn.active {
    border-width: 5px;
    border-color: #1dace8;
}