Webleb - fragmentos de código

HTML

CSS

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

}
body{
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
background-color: #050505;
}
.cube{
position: relative;
width: 300px;
height:300px;
transform-style: preserve-3d;

animation: animate 4s linear infinite;
}
@keyframes animate
 {
    0%
    {
        transform: rotateX(-30deg)rotateY(0deg);  
    }
    100%
    {
        transform: rotateX(-30deg)rotateY(360deg); 
    }
}
.cube div{
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
}
.cube div span{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:linear-gradient(#151515,#00ec00);
    transform: rotateY(calc(90deg *var(--i)))translateZ(150px);
}
.top{
    position: absolute;
    top: 0;
    left: 0;
    width: 300px;
    height: 300px;
    background: #222;
    transform: rotateX(90deg) translateZ(150px);
}
.top::before{
content: '';
position: absolute;
top: 0;
left: 0;
width: 300px;
height: 300px;
background: #0f0;
transform: translateZ(-380px);
filter: blur(20px);
box-shadow: 0 0 120px rgba(0,255,0,0.2),
0 0 200px rgba(0,255,0,0.4),
0 0 300px rgba(0,255,0,0.6),
0 0 400px rgba(0,255,0,0.8),
0 0 500px rgba(0,255,0,1);

}

JS

CUBO