#multiclass_levels td.class-level {
    min-width: 300px;
    max-height: 24px;
}

#multiclass_levels td.class-level div.slider {
    min-width: 300px;
    max-height: 24px;
}

@media only screen and (max-width: 500px) {
    #multiclass_levels td.class-level {
        min-width: 150px;
    }

    #multiclass_levels td.class-level div.slider {
        min-width: 150px;
    }
}


.slider {
    position: relative;
    margin: 0 auto;
    padding: 10px 0;
    border: 1px solid rgba(0, 0, 0, .1);
    border-radius: 4px;
    user-select: none;
}

.slider__bar {
    width: 100%;
    height: 2px;
    background-color: gray;
}

.slider__button {
    position: absolute;
    left: 0;
    top: 0;
    width: 24px;
    height: 24px;
    background: url(/img/wood-1.jpg);
    border: 1px solid rgba(0, 0, 0, .1);
    border-radius: 4px;
    cursor: pointer;
    text-align:center;
}