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 0.5s, padding 0.5s;
}
.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 .label{
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
  transition: color 0.2s, text-shadow 0.2s;
}
.launch-button:hover .label{
  color: orange;
  text-shadow: 0 0 3px rgba(251,255,0,0.5);
}

.launch-button .rocket{
  position: absolute;
  top: 50%;
  right: 40px;      
  transition: transform 0.5s;
}

.launch-button:hover .rocket{ transform: translateY(-50%) scale(1.3); }

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