html {
  background-color: red;
}

p {
  color: #fff;
}

.wrapper {
  width: 80%;
  margin: 0 auto;
}

.row {
  display: block;
  margin: 0;
  padding: 0;
  line-height: 0;
}

.col {
  display: inline-block;
  background-color: #fff;
  width: 30px;
  height: 30px;
  margin: 0;
  padding: 0;
}

.paint {
  background-color: #e6e6e6;
}