.left-side {
  float: left;
  width: 215px;
}
.left-side .banner {
  width: 90%;
}
.cover {
  display: block;
  margin: auto;
  width: 84%;
}
.audios {
  padding: 20px 0;
  display: table;
  width: 100%;
  text-align: center;
  font-size: 15px;
  font-weight: bolder;
}
.audios li {
  width: 75%;
  margin: 5px;
  border: 1px solid;
  border-radius: 5px;
  padding: 15px 5px;
  display: inline-block;
}
.audios li .audio-name {
  font-weight: bold;
  font-size: 16px;
  display: block;
  padding: 5px;
}
.audios li audio {
  width: 100%;
}
.menu {
  margin-bottom: 10px;
}
.banner {
  display: block;
  margin: auto;
  width: 98%;
}