.one_video{margin:50px 0}.one_video_wrap{margin:0 auto;max-width:100%;width:100%;　box-sizing:border-box}.one_video_wrap embed,.one_video_wrap iframe,.one_video_wrap object,.one_video_wrap video{display:block;height:auto!important;max-width:100%;width:100%!important}.one_video_1200{width:min(1200px,100%)}.one_video_1000{width:min(1000px,100%)}.one_video_800{width:min(800px,100%)}.one_video_600{width:min(600px,100%)}.one_video_570{width:min(570px,100%)}.one_video_400{width:min(400px,100%)}.one_video_360{width:min(360px,100%)}@media (max-width:756px){.one_video{margin:30px 0}}