body {
  background: gray;
  margin: 0px;
  padding: 0px;
  padding-top: 5px;
}

#container {
  background: #990000;
  margin-left: auto;
  margin-right: auto;
  margin-top: 0px;
  margin-bottom: auto;

  padding: 0px;
  width: 800px;
}

#header {
  background: #000028; 
  color: yellow;
  text-align: center;
}

#header h1 {
  padding: 0px;
  margin: 0px;
  padding-top: 5px;
}

#header h2 {
  padding: 0px;
  margin: 0px;
}

#header h3 {
  padding: 0px;
  margin: 0px;
  padding-bottom: 5px;
}

#header h4 {
  padding: 0px;
  margin: 0px;
}



#navigation {
  margin: 0px;
  color: white;
  background: #990000;
  font-family: Arial;
  font-weight: bold;
  text-align: center;
  background: #000090;

}



#sidebar {
  font-family: arial ;
  width: 120px;
  color: white;
  float: left;
  padding-left: 5px;
  padding-right: 5px;

}

#sidebar ul {
 padding: 2px;
 margin: 2px;
 list-style-type: none; 
}

#sidebar li {
 padding-top: 3pt;
 padding-bottom: 3pt;
}

#content {
  width: 650px;
  font-family: Arial;
  color: black;
  background:  #FFFFCC;
  float: right;
  padding: 10px;
}

#content h1 {
  margin: 5px;
}

#content code {
  text-align: left;
}

#content p {

}

#content ul {

}


#footer {
  text-align: center;
  width: 790px;
  font-size: 10pt;
  background: #990000;
  padding: 5px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 0px;
  clear: both;
  color: white;
}

#footer img {
  padding-right: 10px;
  border: 0;
  float: right;
}

#navigation a:link {
  color: white;
  text-decoration: none;
}

#navigation a:visited{ 
  color: white;
  text-decoration: none;
}

#navigation a:hover {
  color: yellow;
  text-decoration: underline;
}

#navigation a:active {
  color: yellow;
  text-decoration: none; 
}

#sidebar a:link {
  color: white;
  text-decoration: none;
}

#sidebar a:visited{ 
  color: white;
  text-decoration: none;
}

#sidebar a:hover {
  color: yellow;
  text-decoration: underline;
}

#sidebar a:active {
  color: yellow;
  text-decoration: none; 
}

.top_anchor {
  text-align: right;
}

/* =========== Person ============== */
.person {
  border-bottom: solid #555555;
  padding: 10px;
  height: 120px;
}

.person img {
  margin-right: 10pt;
  width: 75px;
  height: 105px;
  float: left;
  border: 0px;
}

.person p { 
  margin-top: 2px; 
  margin-bottom: 2px; 
}

.person .name {
  font-size: large;
}

.person .contact {
  font-style: italic;
}

.person .officehours {
 color: green;
}

.person .interest {
  font-size: small;
}



/* =========== module ============== */
.module {
  border-top: solid #555555;

}

.module .title {
  font-size: large;
}


.module .outline {

}

.module .lecture {
  border-top: dotted #777777;
}

.module .lecture_past {
  border-top: dotted #777777;
}

.module .lecture_present {
  background: orange;
  padding: 20px;
  border-top: dotted #777777;
}

.module .lecture_future {
  border-top: dotted #777777;
  color: gray;
}

.module .date {
  font-style: italic;
}


.recitation {
  border-top: solid #777777;
 
}

.homework {
  border-top: solid #777777; 
 
}





.left_image {
  padding-top: 5px;
  padding-bottom: 5px;
  padding-right: 15px;
  border: 0;
  float: left;
}

.right_image {
  padding-top: 5px;
  padding-bottom: 5px;
  padding-left: 15px;
  border: 0;
  float: right;
}