header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 200px;
  background: linear-gradient(
    to bottom,
    #000000 40%,
    #0560aa 80%,
    #7cd4ef 100%
  );
}

body {
  padding-top: 200px;
}

.launch-button {
  position: absolute;
  left: 50%;
  top: 75%;
  transform: translate(-50%, -50%);

  text-decoration: none;
  background-color: #aa0000;
  color: white;
  font-size: 20px;
  padding: 15px 60px 15px 30px;
  border-radius: 10px;

  transition: transform 0.5s, background-color 0.1s, padding 0.5s,
    box-shadow 0.1s;
}

.launch-button:hover {
  background-color: #cc0000;
  box-shadow: 0 0 8px #ff0000;
}

.launch-button:active {
  background-color: #750000;
  box-shadow: 0 0 2px #750000;
  transform: translate(-50%, -20%) scale(0.7);
  padding: 15px 30px;
}

.launch-button .rocket {
  position: absolute;
  top: 50%;
  right: 40px;

  transition: transform 0.5s;
}

.launch-button .rocket i {
  position: absolute;
  top: 0;
  left: 0;
}

.launch-button .fa-rocket {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.launch-button .fa-burn {
  color: orange;
  transform: translate(-50%, -15%) rotate(180deg) scale(0.1);
  transition: transform 0.4s;
}

.launch-button:hover .fa-burn {
  transform: translate(-50%, -15%) rotate(180deg) scale(0.4);
}

.launch-button:active .fa-burn {
  transform: translate(-50%, 25%) rotate(180deg) scale(0.8);
}

.launch-button:hover .rocket {
  transform: scale(1.3);
}

.launch-button:active .rocket {
  transform: rotate(-15deg) translate(60px, -140px) scale(3.5);
}

.launch-button .label {
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: white;

  transition: color 0.2s, text-shadow 0.2s;
}

.launch-button:hover .label {
  color: orange;
  text-shadow: 0 0 3px rgb(251, 255, 0, 0.5);
}

@keyframes burn {
    from { transform: rotate(-7deg); }
    33% { transform: rotate(4deg); }
    66% { transform: rotate(-4deg); }
    to { transform: rotate(7deg); }
  }

  .launch-button:active .fa-burn::before{
    display: block;
    transform-origin: center bottom;
    animation-name: burn;
    animation-duration: 0.1s;
    animation-iteration-count: infinite;
    animation-direction: alternate;
  }