[id=demo] {
  display: block;
  border-width: 1px 0;
  border-style: solid;
  padding: .5em;
}
[id=demo] ul {
  list-style: none;
  margin: 0;
}
[id=demo] li {
  display: block;
  margin-left: -40px;
}

pre {
  background: #f7f7f7;
  border: 1px solid #ccc;
  border-radius: 3px;
  margin: auto;
  overflow-x: scroll;
  padding: 1em;
}

@media (max-width: 59.9em) {
  [id=demo] {
    background: #DCE3FF;
    border-color: #94aaff;
  }
}
@media (max-width: 29.9em) {
  [id=demo] {
    background: #fcf;
    border-color: #f361ff;
  }
}
@media (min-width: 60em) {
  [id=demo] {
    background: #fff1c1;
    border-color: #ffd500;
  }

  [id=demo] ul {
    display: flex;
    margin-left: -40px;
  }

  [id=demo] li {
    margin-left: 0px;
    padding: 0 .5em;
  }
}
.mqmatches {
  background: #f44336;
}