#introBg,#introBox{height:100%;left:0;position:absolute;top:0;width:100%}#introBg{border:.15vw solid _border}#enterBtn{height:5.8%;left:72%;position:absolute;top:91.4%;width:10%}#menuBg{border:.15vw solid _border}#menuBg,#menuBox{height:100%;left:0;position:absolute;top:0;width:100%}