body {
  font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
  font-size: 12px;
}
a:link, a:visited {
  color: #6666FF;
  text-decoration: none;
  font-size: 12px;
}
a:hover {
  font-size: 12px;
  color: #8B4500;
}
.trtda {
  display: block;
  color: #6666FF;
  text-decoration: none;
  font-size: 12px;
}
.trtda:hover {
  display: block;
  font-size: 12px;
  color: #8B4500;
  border-top: 1px solid #cccccc;
  border-bottom: 1px solid #cccccc;
}
h1, h2, h3, h4, h5, h6 {
  font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
  margin: 0px;
  padding: 0px;
}
h1 {
  color: #334D55;
  padding-left: 25px;
}
h2 {
  color: #006699;
  padding-left: 25px;
  padding-top: 0px;
}
h3 {
  font-size:16px;
  color: #334D55;
}
h4 {
  font-size:14px;
  color: #333333;
}
h5 {
  font-size:12px;
  color: #334D55;
}
h6 {
  font-size:11px;
  color: #333333;
}
.theory {
  clear: both;
  padding: 10px 0px 0px 10px;
  font-size: 100%;
}
.theory p {
  padding: 0px 0px 10px 0px;
}
#text_b {
  padding: 25px 0px 10px 25px;
  font-weight: 600;
  font-size: 12px;
}
#text_b2 {
  padding: 25px 0px 10px 0px;
  font-weight: 600;
  font-size: 12px;
}
#text_p {
  text-align: justify;
  padding: 0px 0px 0px 25px;
  font-size: 12px;  
}
#text_h1 {
  text-align: center;
  padding: 10px 0px 10px 0px;
  font-size: 14px;
  color: #8B4500;
}
#course_name{
  background: #CCCCCC;
  color: #000000;
  font-size: 16px;
  padding-left: 20px;
  font-weight: 600;
}
#course_link{
  padding-left: 20px;
}
#menu{  
  border-right: 1px solid #cccccc;
  border-left: 1px solid #cccccc;
}
#cell{  
  border-bottom: 1px solid #cccccc;
}
#testbar{
  margin-left: 10%;
  margin-right: 10%;
  padding: 10px;
  background-color: #EEEEEE;
  border: 1px solid #CCC;
}
#question{
  font-size: 14px;
  color: #0000FF;
}
#answer{
  text-align: left;
  font-size: 12px;
  color: #000000;
} 
#comment{
  font-size: 12px;
  color: #006699;
  font-style: italic;
}