body {
  font-size: 16px ;
  font-family: "times new roman", times, serif;
  background-color: black;
  color: white;
  margin-left: 200px;
  margin-right: 200px;
  list-style-type: none;
  }
#mainContent{
  border: 6px dashed white;
  height: 900px; /* Example dimension */
  width: 800px;  /* Example dimension */
  float:left;
  }
.sidebar{
  height: 500px;
  width: 130px;
  border: 10px groove #9e9e9e;
  margin-left:820px;
  margin-right:0px;
  list-style-type: none;
  }
#art{
  border: 9px groove red;
  padding:4px;
  margin:7px;
  }
a:visited {
  color: blue;
}
#id{
  border: 6px outset white;
  height: 260px; /* Example dimension */
  width: 800px;  /* Example dimension */
  float:left;
  padding-top: 19px;
  padding-left: 19px;
  }