style.css

body{
    margin: 0;
    padding: 0;
    overflow: hidden;
}

img{
    height: 100px;
    width: 100px;
}

section{
    position: absolute;
    height: 100vh;
    width: 100vw;
}

.set{
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 50;
}

.set div{
    position: absolute;
    display: block;
}

.set div:nth-child(1){
    left: 0%;
    animation: animate 15s linear infinite;
    animation-delay: -7s;
}.set div:nth-child(2){
    left: 65%;
    animation: animate 25s linear infinite;
    animation-delay: -10s;
}.set div:nth-child(3){
    left: 50%;
    animation: animate 20s linear infinite;
    animation-delay: -9s;
}.set div:nth-child(4){
    left: 70%;
    animation: animate 15s linear infinite;
}.set div:nth-child(5){
    left: 85%;
    animation: animate 10s linear infinite;
    animation-delay: -5s;
}.set div:nth-child(6){
    left: 20%;
    animation: animate 25s linear infinite;
    animation-delay: -10s;
}.set div:nth-child(7){
    left: 10%;
    animation: animate 13s linear infinite;
    animation-delay: -7s;
}.set div:nth-child(8){
    left: 35%;
    animation: animate 18s linear infinite;
    animation-delay: -8s;
}.set div:nth-child(9){
    left: 91%;
    animation: animate 10s linear infinite;
    animation-delay: -5s;
}.set div:nth-child(10){
    left: 100%;
    animation: animate 22s linear infinite;
    animation-delay: -5s;
}


.set2{
    transform: scale(1.5) rotateY(180deg);
    filter: blur(2px);
}
.bgimage{
    background: url(./back.png);
    width: 100vw;
    height:100vh;
    background-position:right top;
    background-repeat: no-repeat;
    background-size: 70%;
    position: absolute;
    z-index: 40;
}

.set3{
    transform: scale(0.8) rotateY(180deg);
    filter: blur(4px);
}

.background{
    height: 110%;
    width: 100vw;
    -webkit-filter: blur(2px);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    z-index: 1;
    background-image: url(./back.jpg);
    background-size: cover;
}

#blacklayer{
    height: 110%;
    width:100vw;
    background-color: rgba(0, 0, 0, 0.411);
    position: absolute;
    z-index: 10;
}
/*  */
.human{
    position: absolute;
    z-index: 9999;
    bottom: 0;
    left: 10%;
    width: 25%;
    height: 90%;
}
.human img{
    width: 100%;
    height: 100%;
}


@keyframes animate{
    0%{
        top: -10%;
        opacity: 0;
        transform: translateX(20px) rotate(0deg);
    }10%{
        
        opacity: 1;
    }20%{
        transform: translateX(-20px) rotate(45deg);
    }40%{
        transform: translateX(-20px) rotate(90deg);
    }60%{
        transform: translateX(20px) rotate(135deg);
    }80%{
        transform: translateX(-20px) rotate(180deg);
    }100%{
        top: 110%;
        opacity: 0;
        transform: translateX(-20px) rotate(225deg);
    }
}