* {
  box-sizing: border-box;
}

article {
  width: 1000px;
  margin-left: 230px;
}

hr {
  border: 2px #ff0000 solid;
}

.row {
  display: flex;
}

.column {
  flex: 50%;
  padding: 20px;
  margin-top: 50px;
  margin-bottom: 50px;
  border: 2px #ff0000 solid;
  background: #0f0f0f
}