@supports (backdrop-filter: blur(48px)) or (-webkit-backdrop-filter: blur(48px)) { .video-control-blur-layer { width: 100%; height: 100%; position: absolute; -webkit-backdrop-filter: blur(48px); backdrop-filter: blur(48px); z-index: -1; } .bui-slider .bui-track.bui-track-video-progress .bui-bar-wrap { background-color: transparent !important; } .bilibili-player-area .bilibili-player-video-control-wrap { transition: none !important; } }