body{
	background-color: #FFF;
}

@media screen and (orientation: portrait) {
	.wechat{
		border: 0px solid #F00;
		margin-left: 20%;
		margin-right: 20%;
		margin-top: 10%;
  		position: relative;
		left:0%;
	}
}

@media screen and (orientation: landscape) {
	.wechat{
		border: 0px solid #F00;
		margin-left: 35%;
		margin-right: 35%;
		margin-top: 10%;
  		position: relative;
		left:0%;
	}
}