.background_video_bone{ position: fixed; z-index: 9999; width: 100%; height: 100%; left: 0px; top: 0px; background-color: rgba(0,0,0,0.5); display: none; } .background_video_bone #background_video{ width: 80%; height: 80%; left: 10%; top: 10%; object-fit: contain; } .bac_v_bone_close{ position: absolute; top: 10px; right: 10px; width: 30px; height: 30px; background-image:url('/static/picture/about_close.png'); background-repeat: no-repeat; background-size: cover; }

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