.flex-container {
  display:flex;
  flex-wrap:wrap;
  flex-direction: row;
  justify-content:center;
  margin: auto;
} 
aside { margin:0%;}
header {text-align:center; color:#fff; background-color:#000; margin:auto; width:75%
 }

table, th, td {border:1px dotted;}
pre {padding:10px 0px 0px 0px;}
  body {font-family:Courier, monospace; color:white; background-color:#000000; margin:auto; padding-top:2%;}
  main {text-align:justify; background-color:black; border: 2px; border-style:dotted; border-color:white; margin:auto; width:50%}
    hr {color:#BCEDB2; border: 1px double;}
    dl {padding:1%;}
  a:link {color:#BCEDB2; font-weight:bold;}
  a:visited {color:#BCEDB2; font-weight:normal}
  a:hover { color:#00ff00; font-weight:bolder;}
  section {padding: 1%}
footer {text-align:center; color: #fff; background-color:#000;  margin:auto; border: 2px dotted white; width:50%; font-size:small}