.center {
  margin: auto;
  width: 100%;
  text-align: center;
  clear: both;
}

.column {
  float: left;
  width: 49%;
  padding: 5px;
  text-align: center;
  font-family: dejavu sans mono;
}

/* Clear floats after image containers */
.row::after {
  content: "";
  clear: both;
  display: table;
}

.button {
  padding: 10px 30px;
  text-align: center;
  display: inline-block;
  font-size: 16px;
}