body { background:white; color:black;
       font-family:Arial, Helvetica, sans-serif; }
h1 {  text-align: center; }
h1,h2,h3 { color:MediumBlue;  background:transparent;  font-weight:bold; }
* { box-sizing:border-box; }
.menu { list-style-type:none; padding:0; margin:0; width:15%; }
.content { width:85%; }
.column { float:left; padding:5px; }
.clearfix::after { content:""; clear:both; display:table; }
ul.menu { padding:0; list-style-type:none; }
a.menu { display:block; color:blue; background-color:#e0e0eb;
         width:140px; font-weight:normal; text-decoration:none; }
a:hover.menu { font-weight:bold; background-color:cyan; }
li.menu { float:left; }