.grouping {
    justify-content: center;
    gap: 12px;
    padding: 10px;
    margin: -50px auto 10px;
    margin-top: 0;
}
.grouping a {

}
.grouping a span {
    position: relative;
    display: block;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-radius: 2px;
    transition: all ease-in 0.1s;
    cursor: pointer;
}
.grouping a.checked span:after {
    content: '';
    display: block;
    width: 30px;
    height: 30px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    /* border: 2px solid black; */
    border-radius: 3px;
    box-shadow: 0 0 3px 0px rgba(22, 22, 22, 0.7);
}
.grouping a:not(.checked) span:hover {
    box-shadow: 0 0 3px 0px rgba(22, 22, 22, 0.7);
    transform: scale(1.1);
}