main > div {
    align-content: center;
    display: flex;
    flex-wrap: wrap;
    gap: var(--default-spacing);
    justify-content: space-around;
    margin: var(--default-spacing);
    max-width: var(--content-max-size);
}

div.theme {
    border: 1px solid var(--theme-border-color);
    border-radius: 15px;
    cursor: pointer;
    padding: var(--half-spacing) var(--default-spacing);
    white-space: nowrap;
}

div.theme-overlay {
    background-image: var(--theme-overlay-background);
    bottom: 0;
    display: none;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
}

div.theme-overlay_opened {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

div.theme-overlay > div:not(.theme-overlay__close) {
    margin: 0 auto;
    max-width: var(--content-max-size);
}

.theme-overlay__header {
    padding: var(--default-spacing);
    position: relative;
    text-align: center;
}

.theme-overlay__close {
    cursor: pointer;
    line-height: var(--default-font-sizing);
    position: absolute;
    right: var(--default-spacing);
    top: var(--default-spacing);
}

.theme-overlay__content > div {
    display: none;
    max-width: var(--content-max-size);
    padding: var(--default-spacing);
}

.theme-overlay__content > div.current {
    display: block;
}

.theme-overlay__action {
    padding: var(--default-spacing);
    text-align: center;
}

.theme-overlay__action > div {
    border: 1px solid var(--theme-border-color);
    border-radius: 15px;
    cursor: pointer;
    display: inline-block;
    padding: var(--half-spacing) var(--default-spacing);
}