button{
	width: 256px;
	height: 256px;
}

p{
	font-size: 30px;
}
a{
	font-size: 30px;
}
.center_block{
	display: block;
	margin: auto;
}
.line{
	display: block;
	height: 40px
}

#ios{
	float: left;
	margin-left: 100px;
}
#android{
	float: right;
	margin-right: 100px;
}