.chex_block
{
    display: block;
    margin-top: calc(3 * var(--rad));
    margin-bottom: calc(5 * var(--rad));
}
    .chex_block > div
    {
        display: inline-flex;
        position: relative;
        margin-left: 25px;
        margin-bottom: calc(1 * var(--rad));
        font-size: 1rem;
    }
    .chex_block > div:hover
    {
        cursor: pointer;
        color: var(--blue_80);
    }
    .chex_block > div:before
    {
        /* Circle */
        content: "";
        display: block;
        position: absolute;
        top: 0;
        right: calc(100% + 3px);
        height: 15px;
        width: 15px;
        border: 1px solid var(--blue);
        border-radius: 50%;
    }
        .chex_block > div.selected:before
        {
            background-color: var(--blue_80);
        }
        .chex_block > div.selected:after
        {
            content: "✔";
            display: block;
            position: absolute;
            top: -1px;
            right: calc(100% + 2px);
            height: 15px;
            width: 15px;
            color: white;
            font-size: 13px;
        }