SOURCE

<div class="container">
	<div class="cube">
		<div style="--x:-1;--y:0;">
			<span style="--i:3"></span>
                <span style="--i:2"></span>
                <span style="--i:1"></span>
            </div>
            <div style="--x:0;--y:0;">
                <span style="--i:3"></span>
                <span style="--i:2"></span>
                <span style="--i:1"></span>
            </div>
            <div style="--x:1;--y:0;">
                <span style="--i:3"></span>
                <span style="--i:2"></span>
                <span style="--i:1"></span>
            </div>
        </div>
        <div class="cube">
            <div style="--x:-1;--y:0;">
                <span style="--i:3"></span>
                <span style="--i:2"></span>
                <span style="--i:1"></span>
            </div>
            <div style="--x:0;--y:0;">
                <span style="--i:3"></span>
                <span style="--i:2"></span>
                <span style="--i:1"></span>
            </div>
            <div style="--x:1;--y:0;">
                <span style="--i:3"></span>
                <span style="--i:2"></span>
                <span style="--i:1"></span>
            </div>
        </div>
        <div class="cube">
            <div style="--x:-1;--y:0;">
                <span style="--i:3"></span>
                <span style="--i:2"></span>
                <span style="--i:1"></span>
            </div>
            <div style="--x:0;--y:0;">
                <span style="--i:3"></span>
                <span style="--i:2"></span>
                <span style="--i:1"></span>
            </div>
            <div style="--x:1;--y:0;">
                <span style="--i:3"></span>
                <span style="--i:2"></span>
                <span style="--i:1"></span>
            </div>
        </div>
    </div>

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #25335b;
    overflow: hidden;
}

.container {
    position: relative;
    top: -80px;
    transform: skewY(-20deg);
    animation: animate 5s linear infinite;
}

@keyframes animate {
    0% {
        filter: hue-rotate(0deg);
    }
    100% {
        filter: hue-rotate(360deg);
    }
}

.container .cube {
    position: relative;
    z-index: 2;
}

.container .cube:nth-child(2) {
    z-index: 1;
    translate: -60px -60px;
}

.container .cube:nth-child(3) {
    z-index: 3;
    translate: 60px 60px;
}

.container .cube div {
    position: absolute;
    display: flex;
    flex-direction: column;
    gap: 30px;
    translate: calc(-70px * var(--x)) calc(-60px * var(--y));
}

.container .cube div span {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 50px;
    background: #dcdcdc;
    z-index: calc(1 * var(--i));
    transition: 1.5s;
}

.container .cube div span:hover {
    transition: 0s;
    background: #ef4149;
    filter: drop-shadow(0 0 30px #ef4149);
}

.container .cube div span::before {
    content: " ";
    position: absolute;
    left: -40px;
    width: 40px;
    height: 100%;
    background: #fff;
    transform-origin: right;
    transform: skewY(45deg);
    transition: 1.5s;
}

.container .cube div span:hover::before {
    transition: 0s;
    background: #f75d64;
}

.container .cube div span::after {
    content: " ";
    position: absolute;
    top: -40px;
    left: 0;
    width: 100%;
    height: 40px;
    background: #f2f2f2;
    transform-origin: bottom;
    transform: skewX(45deg);
    transition: 1.5s;
}

.container .cube div span:hover::after {
    transition: 0s;
    background: #f14e55;
}