body {
  overflow: hidden;
  padding: 0;
  margin: 0;
}
#canvas {
  background: rgb(128, 64, 64);
}
A:link {
  color:rgb(0,0,255);
  text-decoration:none;
}
A:active {
  color:rgb(255,0,0);
  text-decoration:none;
}
A:visited {
  color:rgb(128,0,128);
  text-decoration:none;
}
A:hover {
  color:rgb(255,0,0);
  text-decoration:underline;
}
.menu {
  font-family:Verdana;
  /*font-size:24px;*/
  line-height:125%;
  font-weight:bold;
}
.hr0 {
  border-color:rgb(128,128,128);
  border-style:solid;
  /*border-style:dashed;*/
}
.hr1 {
  border-color:rgb(128,128,128);
  border-style:dotted;
}

.overlay {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.7);
  transition: opacity 500ms;
  visibility: hidden;
  opacity: 0;
}
.overlay:target {
  visibility: visible;
  opacity: 1;
}

.popup {
  /*margin: 70px auto;*/
  margin: 8px auto;
  /*padding: 20px;*/
  padding: 16px;
  /*background: #fff;*/
  background: #000;
  border-radius: 5px;
  /*width: 30%;*/
  width: 75%;
  position: relative;
  /*transition: all 5s ease-in-out;*/
  transition: all 500ms ease-in-out;
}

.popup h2 {
  margin-top: 0;
  /*color: #333;*/
  color: #fff;
  font-family: Tahoma, Arial, sans-serif;
}
.popup .close {
  position: absolute;
  top: 20px;
  right: 30px;
  transition: all 200ms;
  font-size: 30px;
  font-weight: bold;
  text-decoration: none;
  /*color: #333;*/
  color: #fff;
}
.popup .close:hover {
  color: #06D85F;
}
.popup .content {
  /*max-height: 30%;*/
  max-height: 100%;
  overflow: auto;
}