.select {
    display: flex;
    flex-direction: column;
    position: relative;
    width: 250px;
    height: 40px;
}

.option {
    padding: 0 30px 0 10px;
    min-height: 40px;
    display: flex;
    align-items: center;
    background: #333;
    border-top: #222 solid 1px;
    position: absolute;
    top: 0;
    width: 100%;
    pointer-events: none;
    order: 2;
    z-index: 1;
    transition: background .4s ease-in-out;
    box-sizing: border-box;
    overflow: hidden;
    white-space: nowrap;
}

    .option:hover {
        background: #666;
    }

.select:focus .option {
    position: relative;
    pointer-events: all;
}

/*input {
    opacity: 0;
    position: absolute;
    left: -99999px;
}*/

    input:checked + label {
        order: 1;
        z-index: 2;
        background: #666;
        border-top: none;
        position: relative;
    }

        input:checked + label:after {
            content: '';
            width: 0;
            height: 0;
            border-left: 5px solid transparent;
            border-right: 5px solid transparent;
            border-top: 5px solid white;
            position: absolute;
            right: 10px;
            top: calc(50% - 2.5px);
            pointer-events: none;
            z-index: 3;
        }

        input:checked + label:before {
            position: absolute;
            right: 0;
            height: 40px;
            width: 40px;
            content: '';
            background: #666;
        }