CSS Snowball Preloader

* {
    border: 0;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
:root {
    font-size: calc(16px + (20 - 16) * (100vw - 320px) / (1280 - 320));
}
body {
    background-color: hsl(223, 90%, 95%);
    font: 1em/1.5 sans-serif;
    height: 100vh;
    display: grid;
    place-items: center;
}
.pl,
.pl__ball,
.pl__ball-inner-shadow,
.pl__ball-side-shadows,
.pl__ball-texture,
.pl__inner-ring,
.pl__outer-ring,
.pl__track-cover {
    border-radius: 50%;
}
.pl {
    position: relative;
    width: 16em;
    height: 16em;
}
.pl__ball,
.pl__ball-inner-shadow,
.pl__ball-outer-shadow,
.pl__ball-side-shadows,
.pl__ball-texture,
.pl__ball-texture:before,
.pl__inner-ring,
.pl__outer-ring,
.pl__track-cover {
    position: absolute;
}
.pl__ball,
.pl__ball-inner-shadow,
.pl__ball-outer-shadow,
.pl__ball-texture:before,
.pl__track-cover {
    animation: ball 3s linear infinite;
}
.pl__ball {
    top: calc(50% - 1.25em);
    left: calc(50% - 1.25em);
    transform: rotate(0) translateY(-6.5em);
    width: 2.5em;
    height: 2.5em;
}
.pl__ball-inner-shadow {
    animation-name: ballInnerShadow;
    box-shadow:
        0 0.1em 0.2em hsla(0, 0%, 0%, 0.3),
        0 0 0.2em hsla(0, 0%, 0%, 0.1) inset,
        0 -1em 0.5em hsla(0, 0%, 0%, 0.15) inset;
    width: 100%;
    height: 100%;
}
.pl__ball-outer-shadow {
    animation-name: ballOuterShadow;
    background-image: linear-gradient(hsla(0, 0%, 0%, 0.15),hsla(0, 0%, 0%, 0));
    border-radius: 0 0 50% 50% / 0 0 100% 100%;
    filter: blur(2px);
    top: 50%;
    left: 0;
    width: 100%;
    height: 250%;
    transform: rotate(20deg);
    transform-origin: 50% 0;
    z-index: -2;
}
.pl__ball-side-shadows {
    background-color: hsla(0, 0%, 0%, 0.1);
    filter: blur(2px);
    width: 100%;
    height: 100%;
    transform: scale(0.75,1.1);
    z-index: -1;
}
.pl__ball-texture {
    overflow: hidden;
    width: 100%;
    height: 100%;
    transform: translate3d(0,0,0);
}
.pl__ball-texture:before {
    animation-name: ballTexture;
    animation-duration: 0.25s;
    background: url(https://assets.codepen.io/416221/snow.jpg) 0 0 / 50% 100%;
    content: "";
    display: block;
    filter: brightness(1.05);
    top: 0;
    right: 0;
    width: 200%;
    height: 100%;
}
.pl__inner-ring {
    box-shadow:
        0 -0.25em 0.5em hsla(0, 0%, 100%, 0.4),
        0 0.5em 0.75em hsla(0, 0%, 100%, 0.4) inset,
        0 0.5em 0.375em hsla(0, 0%, 0%, 0.15),
        0 -0.5em 0.75em hsla(0, 0%, 0%, 0.15) inset;
    top: 2.375em;
    left: 2.375em;
    width: calc(100% - 4.75em);
    height: calc(100% - 4.75em);
}
.pl__outer-ring {
    box-shadow:
        0 -0.45em 0.375em hsla(0, 0%, 0%, 0.15),
        0 0.5em 0.75em hsla(0, 0%, 0%, 0.15) inset,
        0 0.25em 0.5em hsla(0, 0%, 100%, 0.4),
        0 -0.5em 0.75em hsla(0, 0%, 100%, 0.4) inset;
    top: 0.75em;
    left: 0.75em;
    width: calc(100% - 1.5em);
    height: calc(100% - 1.5em);
}
.pl__track-cover {
    animation-name: trackCover;
    background-image: conic-gradient(hsla(223, 90%, 95%, 1) 210deg, hsla(223, 90%, 95%, 0) 270deg);
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Animations */
@keyframes ball {
    from {
        transform: rotate(0) translateY(-6.5em);
    }
    50% {
        transform: rotate(180deg) translateY(-6em);
    }
    to {
        transform: rotate(360deg) translateY(-6.5em);
    }
}
@keyframes ballInnerShadow {
    from {
        transform: rotate(0);
    }
    to {
        transform: rotate(-360deg);
    }
}
@keyframes ballOuterShadow {
    from {
        transform: rotate(20deg);
    }
    to {
        transform: rotate(-340deg);
    }
}
@keyframes ballTexture {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(50%);
    }
}
@keyframes trackCover {
    from {
        transform: rotate(0);
    }
    to {
        transform: rotate(360deg);
    }
}

<div class="pl">
    <div class="pl__outer-ring"></div>
    <div class="pl__inner-ring"></div>
    <div class="pl__track-cover"></div>
    <div class="pl__ball">
        <div class="pl__ball-texture"></div>
        <div class="pl__ball-outer-shadow"></div>
        <div class="pl__ball-inner-shadow"></div>
        <div class="pl__ball-side-shadows"></div>
    </div>
</div>