#main-content {
    display: none;
}
.loading {
    margin: auto;
    position: relative;
    width: 85px;
    height: 50px;
    background-repeat: no-repeat;
    background-image: linear-gradient(#593434 50px, transparent 0),
                      linear-gradient(#593434 50px, transparent 0),
                      linear-gradient(#593434 50px, transparent 0),
                      linear-gradient(#593434 50px, transparent 0),
                      linear-gradient(#593434 50px, transparent 0),
                      linear-gradient(#593434 50px, transparent 0);
    background-position: 0px center, 15px center, 30px center, 45px center, 60px center, 75px center, 90px center;
    animation: rikSpikeRoll 0.95s linear infinite alternate;
}
@keyframes rikSpikeRoll {
  0% { background-size: 10px 3px;}
  16% { background-size: 10px 50px, 10px 3px, 10px 3px, 10px 3px, 10px 3px, 10px 3px}
  33% { background-size: 10px 30px, 10px 50px, 10px 3px, 10px 3px, 10px 3px, 10px 3px}
  50% { background-size: 10px 10px, 10px 30px, 10px 50px, 10px 3px, 10px 3px, 10px 3px}
  66% { background-size: 10px 3px, 10px 10px, 10px 30px, 10px 50px, 10px 3px, 10px 3px}
  83% { background-size: 10px 3px, 10px 3px,  10px 10px, 10px 30px, 10px 50px, 10px 3px}
  100% { background-size: 10px 3px, 10px 3px, 10px 3px,  10px 10px, 10px 30px, 10px 50px}
}