.theme-switcher {
    /* size */
    width: 50px;
    height: 50px;
    display: flex;
    background: var(--global-contrast);
    border-radius: 50%;
    padding: 0;

    /* for page alignment */
    position: fixed;
    bottom: var(--spacing);
    margin-bottom: 0;
    line-height: 1;
    right: calc(var(--spacing) + var(--scrollbar-width, 0px));

    /* style */
    cursor: pointer;
    justify-content: center;
    align-items: center;
    box-shadow: 3px 3px 3px rgba(0, 0, 0, 0.5);
    border-width: var(--global-border-width);
    border-color: var(--global-border-color);
}

.theme-switcher > img {
    width: 55%;
}