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

.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{
  transform: translate(-50%, -15%) rotate(180deg) scale(0.1);
  color:orange;
}

.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);
  transition: transform 0.4s;
}

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

.launch-button .label{
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:white;
  transition: color 0.2s, text-shadow 0.2s;
}

@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;
}