style.css

*{

    margin: 0;
    padding: 0;
    font-family: consolas;
    box-sizing: border-box;
}
body {

    display: flex;
    justify-content: center;
    align-items:center ;
    min-height: 100vh;
    background-color: #181818;
}

span{

    color: #00bcd4;
    text-transform: uppercase;
    font-size: 2em;
    letter-spacing: 2px;
    margin-top:20px ;
    margin-bottom: 23px;
    filter: drop-shadow(0 0 20px #00bcd4) drop-shadow(0 0 60px #00bcd4);
    animation: animate-text 0.5s steps(1) infinite;
}
@keyframes animate-text{
    0%,100%
    {
       opacity: 0;
    }
    50%{
        opacity: 1;
    }
}
.scan {

    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.scan .fingerprint {

    position: relative;
    width: 300px;
    height: 309px;
    background: url('fingerprint1.jpg');
    background-repeat: no-repeat;
    background-size: 300px;
    
}
.scan .fingerprint::before
{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 309px;
    background: url('fingerprint2.jpg');
    background-size: 300px;
    
    animation: animate 5s ease-in-out infinite;
    
}
@keyframes animate{
    0%,100%
    {
        height: 0%;
    }
    50%{
        height: 100%;
    }
}

.scan .fingerprint::after
{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 8px;
    background:#00bcd4 ;
    border-radius: 8px;
    filter: drop-shadow(0 0 20px #00bcd4) drop-shadow(0 0 60px #00bcd4);
    
    animation: animate_line 5s ease-in-out infinite;
    
}
@keyframes animate_line{
    0%,100%
    {
        top: 0%;
    }
    50%{
        top: 100%;
    }
}