@charset "utf-8";.video-container{position:relative;padding-bottom:56.25%;padding-top:25px;height:0;overflow:hidden;margin-left:auto;margin-right:auto;width:84%}.video-container iframe,.video-container object,.video-container embed{position:absolute;top:0;left:0;width:100%;max-width:640px;height:100%}#nico_pc,#nico_sp{display:none}#nico_sp,#nico_sp iframe{width:100%;max-width:312px;margin-left:auto;margin-right:auto}