.wp-dark-mode-switcher {
    display: inline-block;
    position: relative;
    width: 20px;
    height: 20px;
}

.wp-dark-mode-switcher .kata-icon {
    font-size: 20px;
    position: absolute;
    cursor: pointer;
}

.wp-dark-mode-switcher:not(.active) .kata-icon.sun {
    display: none;
}
.wp-dark-mode-switcher.active .kata-icon.moon {
    display: none;
}