styles.css

/*
* Ethereum logo recreation using HTML and pure CSS.
* By FrontendCrypto.
* https://twitter.com/FrontendCrypto
*/

:root {
    --lighter: hsl(0, 0%, 90%);
    --light: hsl(0, 0%, 55%);
    --dark: hsl(0, 0%, 20%);
    --darker: hsl(0, 0%, 8%);
    --transition: 0.3s ease-in-out;
}

h1 {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 0;
}

pre {
    margin: 0;
}

.grid {
    display: inline-grid;
    grid-gap: 2rem;
    grid-template-columns: repeat(2, max-content);
    justify-content: center;
    width: 100%;
}

.ethereum {
    height: 400px;
    margin: 30px auto 0;
    position: relative;
    width: 400px;
}

.circle {
    align-items: center;
    background-color: var(--lighter);
    border: 25px solid var(--dark);
    border-radius: 50%;
    display: flex;
    height: 350px;
    transform: rotate(0);
    transition: var(--transition);
    width: 350px;
    will-change: transform;
}

.wrapper {
    height: 194px;
    margin: 0 auto;
    position: relative;
    transform: translatey(-8%);
    width: 121px;
}

.element {
    position: absolute;
}

.upper {
    border-style: solid;
    border-width: 64px 0 55px 38px;
    height: 0;
    transform: rotate(31deg) translatex(31px);
    width: 0;
}

.middle {
    border-style: solid;
    border-width: 27px 62px 37px 0;
    height: 0;
    transform: translatex(-1px);
    width: 0;
}

.bottom {
    border-style: solid;
    border-width: 0 40px 29px 65px;
    height: 0;
    transform: rotate(54deg) translatex(-33px);
    width: 0;
}

.element-2 {
    right: 1px;
    transform: scalex(-1);
}

.element-3,
.element-4 {
    bottom: 41px;
}

.element-4 {
    right: 0;
    transform: scalex(-1);
}


.element-5 {
    left: 9px;
}

.element-6 {
    right: 9px;
    transform: scalex(-1);
}

.element-5,
.element-6 {
    bottom: -7px;
}

.element-1 .upper {
    border-color: transparent transparent transparent var(--light);
}

.element-2 .upper {
    border-color: transparent transparent transparent var(--dark);
}

.element-3 .middle {
    border-color: transparent var(--dark) transparent transparent;
}

.element-4 .middle {
    border-color: transparent var(--darker) transparent transparent;
}

.element-5 .bottom {
    border-color: transparent transparent var(--light) transparent;
}

.element-6 .bottom {
    border-color: transparent transparent var(--dark) transparent;
}

.ethereum:hover .circle,
.ethereum.hover .circle {
    border: 25px solid var(--dark);
    filter: brightness(0.9);
    transform: rotate(-15deg);
}

.author {
    text-align: center;
}