body {
  font-family: Arial, sans-serif;
  font-size: 11pt;
  background-color: #90a3b0;
  color: #fefefe;
}

a:link { color: #fefefe; }
a:visited { color: #fefefe; }
a:hover { color: #fefefe; }
a:active { color: #fefefe; }

#box {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  width: 55%;
  height: 40%;
  margin: auto;
  padding: 20px 20px 20px 20px;

  text-align: center;
  vertical-align: middle;
}

#left-box {
  text-align: left;
  padding: 10px;
}

#larger {
  font-size: 16pt;
}

/*
 * Tab navigation 
 */

.tab {
  overflow: hidden;
  border: 1px solid #ccc;
  background-color: #f1f1f1;
}

.tab button {
  background-color: inherit;
  color: #909090;
  font-weight: bold;
  font-size: 1em;

  float: left;
  border: none;
  outline: none;
  cursor: pointer;
  padding: 5px;
  transition: 0.3s;
}

.tab button:hover {
  background-color: #ddd;
}

.tab button.active {
  background-color: #ccc;
}

.tabcontent {
  display: none;
  padding: 6px 12px;
  border: 1px solid #ccc;
  border-top: none;

  text-align: left;
  padding: 10px;
}