body {
  background-color: black;
  color: white;
  font-family: Courier;
}

a:link {
  color: blue;
  text-decoration: none;
}
a:visited {
  color: red;
  text-decoration: none;
}
a:hover {
  color:green;
  text-decoration: underline overline;
}
a:active {
  color: yellow;
  background-color: transparent;
  text-decoration: none;
}

.button{
  background-color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
}
.music-container{
   display: flex;
   justify-content: center;
}
.music-tracks{
  display: flex;
  align-items: center;
  flex-direction: column;
  height: 200px;
  overflow-y: auto;
}

.head-line span {
  display: inline-block;
  letter-spacing: -12px;
  color: #13EDB3;
  
  animation: chill 2s ease-in-out infinite;
}

.head-line span:nth-child(1) {
  animation-delay: 0s;
}
.head-line span:nth-child(2) {
  animation-delay: 0.2s;
}
.head-line span:nth-child(3) {
  animation-delay: 0.4s;
}
.head-line span:nth-child(4) {
  animation-delay: 0.1s;
}
.head-line span:nth-child(5) {
  animation-delay: 0.6s;
}

@keyframes chill {
  0%, 100% {
    transform: rotate(0deg);
  }
  50% {
    transform: rotate(-20deg);
  }
}