.flag-wrapper {
  width: 100%;
  display: inline-block;
  position: relative;
  box-shadow: 0 0 2px black;
  overflow: hidden;
  margin-bottom: 20px;
}

.flag-wrapper:after {
  padding-top: 75%; /* ratio */
  display: block;
  content: '';
}

.flag-wrapper .flag {
  position: absolute;
  top: 0; bottom: 0; right: 0; left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
}

footer {
  margin-top: 30px;
  padding: 30px 0;
  border-top: 1px solid #ddd;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 300;
}

#examples {
  white-space: nowrap;
  margin-bottom: 8px;
}

#examples {
  overflow: hidden;
}