.scrolldown {
    position: absolute;
    bottom: 80px;
    right: 80px;
}

@media only screen and (max-width: 767px) {
    .scrolldown {
        bottom: 2.5%;
        left: 50%;
        transform: translateX(-50%);
        right: 0;
    }
}

.scrolldown:before {
    content: "";
    position: absolute;
    bottom: 0;
    right: -6px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #eee;
    animation: circlemove 1.6s ease-in-out infinite,
    cirlemovehide 1.6s ease-out infinite;
}

@media only screen and (max-width: 767px) {
    .scrolldown:before {
        left: 50%;
        transform: translateX(-50%);
    }
}

@keyframes circlemove {
    0% {
        bottom: 75px;
    }
    100% {
        bottom: -5px;
    }
}

@media only screen and (max-width: 767px) {
    @keyframes circlemove {
        0% {
            bottom: 35px;
        }
    }
}

    @keyframes cirlemovehide {
        0% {
            opacity: 0
        }
        50% {
            opacity: 1;
        }
        80% {
            opacity: 0.9;
        }
        100% {
            opacity: 0;
        }
    }
    .scrolldown:after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        width: 2px;
        height: 80px;
        background: #eee;
    }

    @media only screen and (max-width: 767px) {
        .scrolldown:after {
            height: 40px;
            left: 50%;
            transform: translateX(-50%);
        }
    }