.mask-box{position: fixed;width: 100%;height:100%;background: rgba(0,0,0,0.5);left:0;top:0;display: none;}
.window-box{position: relative;width:8rem;height:8rem;background: url(../img/bg.png)no-repeat;background-size: 100%;
left:50%;top:50%;margin-top:-4rem;margin-left:-4rem}
.window-box .btn-box{position: absolute;bottom:0.8rem;left:0.6rem}
.window-box .btn-box li{margin-top:0.2rem;}
.window-box .btn-box img{width:90%;animation: online 0.8s infinite;}
.window-box .close{position: absolute;left:50%;width:0.7rem;margin-left:-0.3rem;bottom:-1rem;}
.window-box .close img{width: 100%;}

@keyframes online{
	0%{
		transform: scale(1);
	}
	50%{
		transform: scale(1.08);
	}
	100%{
		transform: scale(1);
	}
}