html,
body {
  background-color: #fff;
  font-family: "Helvetica", "Arial", "Verdana", sans-serif;
  margin: 0;
  padding: 0;
}

.app-container {
  max-width: 100%;
  overflow: hidden;
}

.header {
  background-color: #369;
  color: #fff;
  padding: 10px 0;
  text-align: center;
}

.header > h1 {
  font-size: 24px;
  font-weight: 400;
  margin: 0;
}

.header > h2 {
  font-size: 18px;
  font-weight: 400;
  margin: 0;
}

.container {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin: 0 auto;
  padding: 20px 0 50px 0;
  user-select: none;
  width: 352px;
}

.container > a {
  color: #369;
  font-size: 14px;
  font-weight: bold;
  text-align: center;
  text-decoration: none;
  width: calc(50% - 10px);
}

.container > a > img {
  border-radius: 20px;
  border: 2px solid #369;
  width: calc(100% - 4px);
}

.container > a:hover {
  color: #47a;
}

.container > a:hover > img {
  border-color: #47a;
  opacity: 0.8;
}

.container > a:active {
  color: #258;
}

.container > a:active > img {
  border-color: #258;
  opacity: 1;
}