#first-video-play-btn,#first-video-pause-btn,#second-video-play-btn,#second-video-pause-btn{opacity:0}#first-video-play-btn-container:hover #first-video-play-btn,#first-video-play-btn-container:hover #first-video-pause-btn,#second-video-play-btn-container:hover #second-video-play-btn,#second-video-play-btn-container:hover #second-video-pause-btn{opacity:1}#first-video-play-btn,#second-video-play-btn{opacity:0;display:none}#first-video-pause-btn,#second-video-pause-btn{opacity:0;display:flex}