body {
  font-size:16px;
  line-height:1.2;
  color:#222;
  background-color:#fff;
}

a, a:visited {
  color:#0038a8;
}

a:hover {
  color:#c4d8e2;
  background-color:#002b7f;
}

dl {
  width:70%;
  display:grid;
  grid-template:auto / max-content max-content;
}

dt, dd {
  margin:0;
  background-color:#eee;
  padding-left:10px;
  padding-right:10px;
}

dt {
  font-weight: bold;
}

dt:nth-child(4n+1), dd:nth-child(4n+2) {
  background-color:#ddd;
}

dt:not(:nth-last-of-type(-n+1)), dd:not(:nth-last-of-type(-n+1)) {
  border-bottom: 1px solid black;
}