h1 {text-align:center;}
code {display:block;margin-left:2em;white-space : pre;}
#footer {text-align:center;margin:1em 0; border-top:1px solid black;}

.eml {display:inline-block; border-bottom:1px solid black;}
img.txt {vertical-align:middle; height:15px;}

.cert {float:right; margin-left:-100%;}
.cert img {vertical-align:middle;}