h1 {
  text-align: center;
}

h2 {
  text-align: center;
}

h3 {
  text-align: center;
}

.row {
  display: flex;
}

.column {
  flex: 33.33%;
  padding: 5px;
  text-align: center;
}

img-with-text {
    text-align: center;
}

a:link, a:visited {
  background-color: green;
  color: black;
  border: 2px solid black;
  padding: 10px 20px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
}

a:hover, a:active {
  background-color: green;
  color: white;
}