button.height-toggle-cs {
    border: none;
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    font-weight: 400;
    padding-top: 40px;
    background: linear-gradient(rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.4), rgba(255, 255, 255, 0.5));
    box-sizing: border-box;
    z-index: 20;
}

button[class="height-toggle-cs"][aria-expanded="true"]{
    padding-top: 0;
    background: none;
}

button.height-toggle-cs::before {
    display: inline-block;
    font-weight: 700;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    border-radius: 0.5rem;
    min-width: 1rem;
    font-size: 180%;
    content: "▼︎";
    vertical-align: text-top;
}

button[class="height-toggle-cs"][aria-expanded="true"]::before {
    transform: rotate(-180deg) translate(0, -0.6rem);;
    vertical-align: text-bottom;
}