body{
    margin: 0;
    padding: 0;
    background: #262626;
}
ul{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 0;
    margin: 0;
    display: flex;

}
ul li{
    list-style: none;
    color: #484848;
    font-family: "arial";
    font-size: 5em;
    letter-spacing: 15px;
    animation: animate 1.4s linear infinite;
}
@keyframes animate{
    0%{
        color: #484848;
        text-shadow: none;
    }
    90%{
        color: #484848;
        text-shadow: none;
    }
    100%{
        color: #fff900;
        text-shadow: 0 0 7px #fff900, 0 0 50px #ff6c00;
    }
}
ul li:nth-child(1) {
    animation-delay: .4s;
}
ul li:nth-child(2) {
    animation-delay: .6s;
}
ul li:nth-child(3) {
    animation-delay: .8s;
}
ul li:nth-child(4) {
    animation-delay: 1s;
}
ul li:nth-child(5) {
    animation-delay: 1.2s;
}
ul li:nth-child(6) {
    animation-delay: 1.4s;
}
ul li:nth-child(7) {
    animation-delay: 1.6s;
}
ul li:nth-child(8) {
    animation-delay: 1.8s;
}
ul li:nth-child(9) {
    animation-delay: 2s;
}