ul.check-list{
  display: grid;
  list-style: none;
  grid-template-columns: repeat(2, 1fr);
  padding: 0 1em;
}

ul.check-list li{
  background: url('../img/check.png') left center no-repeat;
  padding-left: 44px;
  color: #fff;
}

@media only screen and (max-width: 600px) {
  ul.check-list{
    grid-template-columns: repeat(1, 1fr);
  }
}