*{box-sizing:border-box}
html,body{width:100%;height:100%;margin:0;padding:0;color:#666;background:#fff;font-family:sans-serif}
main{width:100%;height:100%;padding:10%;line-height:80vh;text-align:center}
main p{line-height:150%}
main img{max-width:70%;vertical-align:middle}
@media only screen and (min-width: 768px) {
	main img{max-width:20%;vertical-align:middle}
}