Init HTML

HTML

<div class="mouse-container">
    <div class="mouse"></div>
    <p class="scroll-text">Scroll</p>
</div>

CSS

@import url(https://fonts.googleapis.com/css?family=Cabin);

@mixin bgGradient {
    background: #4e5559
        linear-gradient(
            transparent 0%,
            transparent 50%,
            #ffffff 50%,
            #ffffff 100%
        );
}

.mouse-container {
    height: 450px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #222a30;
}

p.scroll-text {
    margin-top: 50px;
    font-family: "Cabin", sans-serif;
    letter-spacing: 12px;
    text-indent: 12px;
    color: #ffffff;
    animation: colorText 5s ease-out infinite, nudgeText 5s ease-out infinite;
}

.mouse {
    @include bgGradient;
    position: relative;
    width: 52px;
    height: 88px;
    background-size: 100% 100%;
    border-radius: 100px;
    background-size: 225%;
    animation: colorSlide 5s linear infinite, nudgeMouse 5s ease-out infinite;
    &:before,
    &:after {
        content: "";
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        margin: auto;
    }
    &:before {
        width: calc(52px - 6px);
        height: calc(88px - 6px);
        background-color: #222a30;
        border-radius: 100px;
    }
    &:after {
        background-color: #ffffff;
        width: 10px;
        height: 10px;
        border-radius: 100%;
        animation: trackBallSlide 5s linear infinite;
    }
}

@keyframes colorSlide {
    0% {
        background-position: 0% 100%;
    }
    20% {
        background-position: 0% 0%;
    }
    21% {
        background-color: #4e5559;
    }
    29.99% {
        background-color: #ffffff;
        background-position: 0% 0%;
    }
    30% {
        background-color: #4e5559;
        background-position: 0% 100%;
    }
    50% {
        background-position: 0% 0%;
    }
    51% {
        background-color: #4e5559;
    }
    59.99% {
        background-color: #ffffff;
        background-position: 0% 0%;
    }
    60% {
        background-color: #4e5559;
        background-position: 0% 100%;
    }
    80% {
        background-position: 0% 0%;
    }
    81% {
        background-color: #4e5559;
    }
    89.99%,
    100% {
        background-color: #ffffff;
    }
}

@keyframes trackBallSlide {
    0% {
        opacity: 1;
        transform: scale(1) translateY(-20px);
    }
    6% {
        opacity: 1;
        transform: scale(0.9) translateY(20px/4);
    }
    14% {
        opacity: 0;
        transform: scale(0.4) translateY(20px * 2);
    }
    15%,
    19% {
        opacity: 0;
        transform: scale(0.4) translateY(-20px);
    }
    28%,
    29.99% {
        opacity: 1;
        transform: scale(1) translateY(-20px);
    }
    30% {
        opacity: 1;
        transform: scale(1) translateY(-20px);
    }
    36% {
        opacity: 1;
        transform: scale(0.9) translateY(20px/4);
    }
    44% {
        opacity: 0;
        transform: scale(0.4) translateY(20px * 2);
    }
    45%,
    49% {
        opacity: 0;
        transform: scale(0.4) translateY(-20px);
    }
    58%,
    59.99% {
        opacity: 1;
        transform: scale(1) translateY(-20px);
    }
    60% {
        opacity: 1;
        transform: scale(1) translateY(-20px);
    }
    66% {
        opacity: 1;
        transform: scale(0.9) translateY(20px/4);
    }
    74% {
        opacity: 0;
        transform: scale(0.4) translateY(20px * 2);
    }
    75%,
    79% {
        opacity: 0;
        transform: scale(0.4) translateY(-20px);
    }
    88%,
    100% {
        opacity: 1;
        transform: scale(1) translateY(-20px);
    }
}

@keyframes nudgeMouse {
    0% {
        transform: translateY(0);
    }
    20% {
        transform: translateY(8px);
    }
    30% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(8px);
    }
    60% {
        transform: translateY(0);
    }
    80% {
        transform: translateY(8px);
    }
    90% {
        transform: translateY(0);
    }
}

@keyframes nudgeText {
    0% {
        transform: translateY(0);
    }
    20% {
        transform: translateY(2px);
    }
    30% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(2px);
    }
    60% {
        transform: translateY(0);
    }
    80% {
        transform: translateY(2px);
    }
    90% {
        transform: translateY(0);
    }
}

@keyframes colorText {
    21% {
        color: #4e5559;
    }
    30% {
        color: #ffffff;
    }
    51% {
        color: #4e5559;
    }
    60% {
        color: #ffffff;
    }
    81% {
        color: #4e5559;
    }
    90% {
        color: #ffffff;
    }
}

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