.zoom-button {
    position: absolute;
    top: var(--unit);
    left: var(--unit);
    z-index: 10;
    padding: 12px;
    background-color: var(--background-color);
    display: block;
    width: 24px;
    height: 24px;
    border-radius: 999px;
    opacity: 0;
    transition: transform .45s var(--easier), opacity .45s var(--easier);
}

.zoom-button-line,
.zoom-button-circle {
    fill: transparent;
    stroke: var(--text-color);
    stroke-width: 60;
    stroke-linecap: round;
    stroke-miterlimit: 10;
}

@media (hover) {
    .zoom-button-show {
        opacity: 1;
    }
}