html{margin:0;padding:0;height:100%}
body{background-color:white;padding:0;margin:0;font-family: "Open Sans", sans-serif;font-optical-sizing: auto;}.txt-center{text-align:center}
main div img{max-width:100%}footer h3{margin:0;}
footer{margin:0 auto;width:900px; max-width:100%;}