ArtPlayer/packages/artplayer/src/style/controls.less

.art-controls {
    position: relative;
    z-index: 10;
    pointer-events: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--art-control-height);

    .art-controls-left,
    .art-controls-right {
        display: flex;
        height: 100%;
    }

    .art-controls-center {
        .art-center(none);
        flex: 1;
        height: 100%;
        padding: 0 10px;
    }

    .art-controls-right {
        justify-content: flex-end;
    }

    .art-control {
        .art-center();
        flex-shrink: 0;
        cursor: pointer;
        white-space: nowrap;
        opacity: var(--art-control-opacity);
        min-height: var(--art-control-height);
        min-width: var(--art-control-height);
        transition: opacity var(--art-transition-duration) ease;

        .art-icon {
            height: var(--art-control-icon-size);
            width: var(--art-control-icon-size);
            transform: scale(var(--art-control-icon-scale));
            transition: transform var(--art-transition-duration) ease;

            &:active {
                transform: scale(calc(var(--art-control-icon-scale) * 0.8));
            }
        }

        &:hover {
            opacity: 1;
        }
    }
}