body, h1, p {
  font-family: Helvetica;
}

.header {
  width: 90%;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.header a {
  display: inline;
  padding: 16px;
  font-size: 18px;
  text-decoration: none;
  font-style: italic;
  color: black;
}

.header h1 {
  display: inline-flex;
  padding: 16px;
  font-size: 48px;
}

.header img {
  display: inline-flex;
  max-width: 150px;
  vertical-align: middle;
}

.content {
  width: 90%;
  display: table;
  margin-left: auto;
  margin-right: auto;
}

.content img {
  margin-left: auto;
  margin-right: auto;
  max-width: 400px;
}

.column {
  flex: 33%;
}

.row {
  display: flex;
  flex-wrap: wrap;
}