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;
}

.label:hover{
    color:orange;
    text-shadow:0 0 3px rgb(251, 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;
}