@import url('https://fonts.googleapis.com/css?family=Exo:400,700');

*{
    margin: 0px;
    padding: 0px;
}

.context {
    width: 100%;
    position: absolute;
    top:50vh;
}

.context h1{
    text-align: center;
    color: #fff;
    font-size: 50px;
}

.area{
    background:linear-gradient(180deg, rgb(241, 36, 36) 0%, rgb(243, 79, 42) 100%);  
    background: -webkit-linear-gradient(to left, #8f94fb, #4e54c8);  
    width: 100%;
    height:100vh;
}

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

.circles li{
    position: absolute;
    display: block;
    list-style: none;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.2);
    animation: animate 25s linear infinite;
    bottom: -150px;
}

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

/* Estilos para los demás círculos... */

@keyframes animate {
    0%{
        transform: translateY(0) rotate(0deg);
        opacity: 2;
        border-radius: 0;
    }
    100%{
        transform: translateY(-1000px) rotate(720deg);
        opacity: 0;
        border-radius: 50%;
    }
}