body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0px;
  width: 100%;
  position: absolute;
}

#main {
  padding-right: 10px;
  position: absolute;
  float: left;
  width: 70%;
  color: black;
  left: 150px;
}

.point {
  list-style: square;
  margin-top: 10px;
  margin-bottom: 5px;
  width: 500px;
  color: black;
  font-weight: bold;
  font-size: 15px;  
}

.content {
  font-family: monospace;
  text-align: justify;
  padding: 15px;
  font-weight: normal;
  width: 550px;
  font-size: 12px;
  border: 1px solid #adadad;
  background: #f4f6f4;
}

#menu {
  position: fixed;
  float: left;
  z-index: 3;
  left: 250px;
  top: 20px;
  background: white;
  text-align: center;
  background: #f1f1f1;
  padding: 8px;
  border: 2px solid #c1c1c1;
}

#head
{
  position: fixed;
  z-index: 2;
  text-align: center;
  top: 0px;
  left: 0px;
  height: 60px;
  width: 100%;
  background: white;
}


#logo {
  float: left;
  position: fixed;
  z-index: 4;
  top: 10px;
  left: 20px;
}

a {
  color: #3353aa;
  font-weight: bold;
  text-decoration: none;
}

#menu a {
  font-family: Arial, Helvetica, sans-serif;
  color: black;
  font-size: 15px;
  font-weight: bold;
  padding-bottom: 1px;
}

a:link {
  color: #3353aa;
}

a:hover {
  text-decoration: underline overline;
}


#materiale td{
  border: 1px solid #aeaeae;
  border-spacing: 0px;
}

#materiale tr:hover{

  background: #ffffff;
}

#materiale { 
  border-collapse: collapse; 
  text-align: center;
  width: 100%;
  empty-cells: show;
}


#calendario td{
  border: 1px solid #aeaeae;
  border-spacing: 0px;
}



#calendario { 
  border-collapse: collapse; 
  text-align: center;
  font-size: 11px;
  width: 100%;
  empty-cells: show;
}

.easy {
  background: #ccffcc;
}

.medium {
  background: #eeeeaa;
}

.hard {
  background: #ffbbbb;
}