#swipeup * {
    box-sizing: border-box;
}

#swipeup {
    position: absolute;
    width: 100%;
    top: 0;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

#swipeup .overlay {
    position: absolute;
    height: 400vh;
    width: 100%;
    background: rgba(0, 0, 0, 0.7);
    margin: -50vh 0 0 0;
}

#swipeup .hint {
    height: 120px;
    width: 120px;
    top: 40vh;
    position: relative;
    margin: 0 auto 0;
}

#swipeup .circle {
    background-color: rgba(0, 0, 0, 0.5);
    height: 120px;
    width: 120px;
    display: block;
    border: 5px solid #999;
    border-radius: 100px;
    position: absolute;
    bottom: 0;
    z-index: 1;
    animation-name: circle;
    animation-duration: 1s;
    animation-timing-function: linear;
    animation-delay: 0s;
    animation-iteration-count: infinite;
    animation-direction: normal;
    animation-play-state: running;
    -webkit-animation-name: circle;
    -webkit-animation-duration: 1s;
    -webkit-animation-timing-function: linear;
    -webkit-animation-delay: 0s;
    -webkit-animation-iteration-count: infinite;
    -webkit-animation-direction: normal;
    -webkit-animation-play-state: running;
}

#swipeup .arrow:before {
    content: "\25b2";
}

#swipeup .arrow {
    font-size: 3.5em;
    color: #ccc;
    bottom: 27px;
    position: absolute;
    left: 50%;
    margin-left: -0.5em;

    -moz-osx-font-smoothing: grayscale;
    -webkit-font-smoothing: antialiased;
    display: inline-block;
    font-style: normal;
    font-variant: normal;
    text-rendering: auto;
    line-height: 1;

    animation-name: arrow;
    animation-duration: 1s;
    animation-timing-function: linear;
    animation-delay: 0s;
    animation-iteration-count: infinite;
    animation-direction: normal;
    animation-play-state: running;
    -webkit-animation-name: arrow;
    -webkit-animation-duration: 1s;
    -webkit-animation-timing-function: linear;
    -webkit-animation-delay: 0s;
    -webkit-animation-iteration-count: infinite;
    -webkit-animation-direction: normal;
    -webkit-animation-play-state: running;
}

#swipeup .pulse {
    margin: 0 auto;
    border-radius: 100px;
    position: absolute;
    left: 5px;
    top: 5px;
    z-index: 0;
    background-color: transparent;
    opacity: 0;
    width: 110px;
    height: 110px;
    border: 10px solid #ccc;
    -webkit-border-radius: 100px;
    -moz-border-radius: 100px;
    -o-border-radius: 100px;
    -ms-border-radius: 100px;
    border-radius: 100px;
    /* Giving Animation Function */
    -webkit-animation: pulse 1s linear infinite 0.3s;
    -moz-animation: pulse 1s linear infinite 0.3s;
    border-image: initial;
}

@keyframes arrow {
    0% {
        bottom: 0;
    }
    75% {
        bottom: 90px;
    }
    100% {
        bottom: 0;
    }
}

@-webkit-keyframes arrow {
    0% {
        bottom: 0;
    }
    75% {
        bottom: 90px;
    }
    100% {
        bottom: 0;
    }
}

@keyframes circle {
    0% {
        height: 120px;
    }
    10% {
        height: 120px;
    }
    50% {
        height: 130px;
    }
    75% {
        height: 150px;
    }
    90% {
        height: 130px;
    }
    100% {
        height: 120px;
    }
}

@-webkit-keyframes circle {
    0% {
        height: 120px;
    }
    10% {
        height: 120px;
    }
    50% {
        height: 130px;
    }
    75% {
        height: 150px;
    }
    90% {
        height: 130px;
    }
    100% {
        height: 120px;
    }
}

@-webkit-keyframes pulse {
    0% {
        -webkit-transform: scale(0);
        opacity: 0;
    }
    8% {
        -webkit-transform: scale(0);
        opacity: 0;
    }
    15% {
        -webkit-transform: scale(0.1);
        opacity: 1;
    }
    30% {
        -webkit-transform: scale(0.5);
        opacity: 1;
    }
    100% {
        opacity: 0;
        -webkit-transform: scale(1.5);
    }
}

@-moz-keyframes pulse {
    0% {
        -webkit-transform: scale(0);
        opacity: 0;
    }
    8% {
        -webkit-transform: scale(0);
        opacity: 0;
    }
    15% {
        -webkit-transform: scale(0.1);
        opacity: 1;
    }
    30% {
        -webkit-transform: scale(0.5);
        opacity: 1;
    }
    100% {
        opacity: 0;
        -webkit-transform: scale(1.5);
    }
}