body{
 background-color:#BEB;
 font-size:24px;
 margin:auto;
 padding-left: 10%;
 padding-right: 10%;
 min-width:600px;
 max-width:1200px; 
}
a{
  color:black;
  text-decoration:none;
  font-weight:bold;
}
u{text-decoration: none;border-bottom: 1px dotted black}
pre{margin:0;padding:0}
.tab{
  border-top-right-radius: 10px;
  border-bottom-right-radius: 10px;
  border: 1px solid lightgray;
  border-left: none;
  font-size: 120%;
  padding-left:3px;
  padding-right:3px;
  margin-left:-20px;
  background-color:#BEB;
}
.tab:hover{background-color:#CFC}
.section{
  border-top-right-radius: 10px;
  border-bottom-right-radius: 10px;
  border-bottom: 1px dotted black;
  border-left: 1px dotted black;
  margin-bottom:20px;
  padding-left:20px;
  background-color:#CFC;
  overflow-x:scroll;
}