body { margin: 0; font-family: sans-serif; font-size: small; text-align: center; background: white; color: black }

a:link, a:visited { color: navy }
a:hover, a:active { color: blue; transition: 0.5s; }

header { padding: 0.5em; background: blue; color: white }
section { margin-left: auto; margin-right: auto; width: 63%; transition: 0.5s; }
footer { font-size: x-small; margin-top: 5em; }

iframe { max-width: 100% !important; }
img { max-width: 100%; }

table { width: 100%; }
th { text-align: right; }
input, select { width: 100%; }
input[type="submit"] { width: auto; }
textarea { width: 100%; }

@media (max-width: 800px) {
 section { width: 95%; }
}