styles.css

html, body {
  font-family: 'Noto Sans JP', sans-serif;
  background: #0f2027; /* fallback for old browsers */
  background: -webkit-linear-gradient(to right, #0f2027, #203a43, #2c5364); /* Chrome 10-25, Safari 5.1-6 */
  background: linear-gradient(to right, #0f2027, #203a43, #2c5364); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
  color: white;
}

.container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-flow: column wrap;
}

.link-container {
  border: 2px solid white;
  height: 120px;
  width: 320px;
  margin: 16px 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.link-container img {
  width: 100px;
  height: 100px;
}

.link-container span {
  display: block;
  font-size: 2em;
  text-decoration: none;
}

.link-container a {
  color: white;
  text-decoration: none;
}

.link-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-flow: row wrap;
  width: 290px;
}