html,
body {
  background-color: #131313;
}

footer {
  padding-bottom: 1rem;
  color: #a9a9a9;
  font-family: 'Roboto', Helvetica, sans-serif;
  font-size: 18px;
  text-align: center;
}

footer a {
}

header {
  text-align: center;
  padding-bottom: 2rem;
}

.audio-container-list {
  justify-content: space-between;
  display: flex;
  flex-wrap: wrap;
  margin: 0 auto;
  max-width: 600px;
  padding: 0;
  width: 60%;
}

.audio-container {
  flex-basis: 45%;
  font-size: 0;
  list-style-type: none;
  position: relative;
  height: 120px;
  margin-bottom: 2rem;
}

.audio-container a {
  cursor: pointer;
  height: 100%;
  display: block;
  outline: none;
}

.audio-container.playing a {
  opacity: 0.35;
}

.audio-container a img {
  display: block;
  width: 100%;
  height: 100%;
}