.box {
  height: 100px;
  overflow-y: scroll;
  padding: 0 20px;
}

dt {
    margin-left: 10px;
    font-weight: bold;
}

dd {
    padding: 3px 10px;
    border-bottom: dotted 1px #ddd;
    margin-right: 10px;
    margin-bottom: 10px;
}