.sign-wrap-4 {
    background: #1a1a1a;
    text-align: center;
    padding: 60px 20px;
}
.sign-wrap-4 .sign_word {
    font-size: 40px;
    font-weight: bold;
    line-height: 50px;
    color: #FFF;
    font-family: 'Roboto', sans-serif;
    text-transform: uppercase;
    text-shadow: 0 -40px 100px, 0 0 2px, 0 0 1em #BFE2FF, 0 0 0.5em #BFE2FF, 0 0 0.1em #BFE2FF;
}
.sign-wrap-4 .sign_word span {
    animation: neon-4 linear infinite 2s;
}
@keyframes neon-4 {
    78% {
        color: inherit;
        text-shadow: inherit;
    }
    79%{
        color: #0b3960;
    }
    80% {
        text-shadow: none;
    }
    81% {
        color: inherit;
        text-shadow: inherit;
    }
    82% {
        color: #0b3960;
        text-shadow: none;
    }
    83% {
        color: inherit;
        text-shadow: inherit;
    }
    92% {
        color: #0b3960;
        text-shadow: none;
    }
    92.5% {
        color: inherit;
        text-shadow: inherit;
    }
}