body{
    width: 100%;
    height: 100vh;
    background: linear-gradient(-45deg, #3f51b1 0%, #5a55ae 13%, #7b5fac 25%, #8f6aae 38%, #a86aa4 50%, #cc6b8e 62%, #f18271 75%, #f3a469 87%, #f7c978 100%);;
    background-size: 400% 400%;
    position: relative;
    animation: animate 7.5s ease-in-out infinite;
    display: flex;
    justify-content: center;
    align-items: center;
}

.title{
    color: #fff;
    padding: 20px;
    font-size: 50px;
}

@keyframes animate{
    0%{
        background-position: 0 50%;
    }
    50%{
        background-position: 95% 50%;
    }
    100%{
        background-position: 0 50%;
    }
}

.circles{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -100;
}

.circles li{
    position: absolute;
    display: block;
    list-style: none;
    width: 100px;
    height: 100px;
    animation: floating 25s linear infinite;
    bottom: -150px;

}

.circles li:nth-child(1){
    left: 25%;
    width: 80px;
    height: 80px;
    animation-delay: 0s;
}


.circles li:nth-child(2){
    left: 10%;
    width: 20px;
    height: 20px;
    animation-delay: 2s;
    animation-duration: 12s;
}

.circles li:nth-child(3){
    left: 70%;
    width: 20px;
    height: 20px;
    animation-delay: 4s;
}

.circles li:nth-child(4){
    left: 40%;
    width: 60px;
    height: 60px;
    animation-delay: 0s;
    animation-duration: 18s;
}

.circles li:nth-child(5){
    left: 65%;
    width: 20px;
    height: 20px;
    animation-delay: 0s;
}

.circles li:nth-child(6){
    left: 75%;
    width: 110px;
    height: 110px;
    animation-delay: 3s;
}

.circles li:nth-child(7){
    left: 35%;
    width: 150px;
    height: 150px;
    animation-delay: 7s;
}

.circles li:nth-child(8){
    left: 50%;
    width: 25px;
    height: 25px;
    animation-delay: 15s;
    animation-duration: 45s;
}

.circles li:nth-child(9){
    left: 20%;
    width: 15px;
    height: 15px;
    animation-delay: 2s;
    animation-duration: 35s;
}

.circles li:nth-child(10){
    left: 85%;
    width: 150px;
    height: 150px;
    animation-delay: 0s;
    animation-duration: 11s;
}



@keyframes floating {

    0%{
        transform: translateY(0) rotate(0deg);
        opacity: 1;
        border-radius: 0;
    }

    100%{
        transform: translateY(-1500px) rotate(720deg);
        opacity: 0;
        border-radius: 50%;
    }

}