.top-page-button-control {
    position: fixed;
    bottom: 2vh;
    right: 3vw;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    background-color: var(--color-aqua-500);
    border-radius: 999px;
    padding: 2px;
    transition: opacity 0.3s ease-in-out;
}

.top-page-button-control.active,
.top-page-button-control.opacity-85 {
    opacity: 0.85;
    visibility: visible;
    pointer-events: auto;
}

.top-page-button-control a {
    display: block;
}

.top-page-button-control img {
    display: block;
    width: 48px;
    height: 48px;
}