body {
  background-color: #f7f7f7;
  margin: 0;
}

a:link, a:visited {
  color: maroon;
  text-decoration: none;
  font-weight: bolder;
}

table {
  border-collapse: collapse;
}

td {
  padding: 2px 5px;
  border: 1px gray dotted;
}

#body {
  position: absolute;
  left: 5%;
  width: 90%;
}

#message {
  color: red;
}

#main {
  position: relative;
  left: 0;
  top: 0;
}

#sidebar {
  position: absolute;
  top: 0;
  left: 0;
  width: 20%;
  height: 100%;
  background-color: #f0f0f0;
  vertical-align: top;
  margin: 0;
  border-right: 0;
  padding: 5px 15px;
}

.sidemenu {
  display: inline-block;
  width: 80%;
  margin: 0;
  padding: 10px 5px;
  border: 1px black dotted;
}

.sidemenu a {
  display: inline-block;
  width: 100%;
}

#content {
  position: relative;
  top: 0;
  left: 21%;
  width: 64%;
  height: 100%;
  background-color: #f0f0f0;
  vertical-align: top;
  margin: 0;
  border-right: 0;
  border-left: 0;
  padding: 5px 15px;
}

#explain {
  position: absolute;
  top: 0;
  left: 85%;
  width: 15%;
  height: 100%;
  background-color: #f0f0f0;
  vertical-align: top;
  margin: 0;
  border-left: 0;
  padding-left: 11px;
}

#header {
  padding-bottom: 25px;
  text-align: center;
  background-color: #f0f0f0;
  margin: 0;
}

#footer {
  padding-top: 50px;
  padding-bottom: 20px;
  text-align: center;
  background-color: #f0f0f0;
  margin: 0;
}