background-color: white;
  margin:10px;
}
h1 {
  color: #990000; 
  font-size: x-large;
}
h2 {
  color: #990000;
  font-size: medium;
}
p.footer {
  text-align: right;
  font-size: xx-small;
  font-weight: lighter;
  font-style: italic;
  color: gray;
}

pre.codeinput {
  margin-left: 30px;
}

span.keyword {color: #0000FF}
span.comment {color: #228B22}
span.string {color: #A020F0}
span.untermstring {color: #B20000}
span.syscmd {color: #B28C00}

pre.showbuttons {
  margin-left: 30px;
  border: solid black 2p