style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.center_div{
    width: 100vw;
    height: 100vh;
    background-color: rgba(4, 18, 54, 0.911);
    display: flex;
    justify-content: center;
    align-items: center;
}
html{
    font-size: 70%;
}

.wave{
    width:  .7rem;
    height: 10rem;
    background-color: rgb(49, 255, 245);
    margin: 0 0.5rem;
    animation: waves 1s linear infinite ;

}
.wave:nth-child(2){
    animation-delay: 0.1s;
}
.wave:nth-child(3){
    animation-delay: 0.2s;
}
.wave:nth-child(4){
    animation-delay: 0.3s;
}
.wave:nth-child(5){
    animation-delay: 0.4s;
}
.wave:nth-child(6){
    animation-delay: 0.5s;
}
.wave:nth-child(7){
    animation-delay: 0.6s;
}
.wave:nth-child(8){
    animation-delay: 0.7s;
}
.wave:nth-child(9){
    animation-delay: 0.8s;
}
.wave:nth-child(10){
    animation-delay: 0.9s;
}


@keyframes waves{
0%{
    transform : scale(0);
}
50%{
    transform : scale(1);
}
100%{
    transform : scale(0);
}

}