main{
    font-size: 100px;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
  

    /*perspective and perp-origin*/
    
    perspective: 10em;
    perspective-origin: 50% calc(50% - 3em);
   
  
  }
  a{
   
    transition: color 0.5s;
    font-size: 1rem;
    color: #ff1ae1;
    font-size: 1.5rem;
    font-weight: 100;
    
}
nav{
  display: grid;
  grid-template-columns: repeat(3,1fr);
  
  margin-top: 10px;

}

  body{
    background-color: black;
  }
  .scene{
    position: relative;
    transform-style: preserve-3d;
     animation: rotate 20s linear infinite; 
  
  }
  
  .floor{
    width: 15em;
    height: 15em;
    position: absolute;
    top: 1em;
    background-image: 
      radial-gradient(rgb(0,0,0,0.75 ) 10%,rgb(32 32 32 /.05) 20%, rgb(0,0,0) 60%),
      repeating-conic-gradient(from 45deg, rgb(240 240 240 /.5) 0deg 90deg, rgb(0,0,0,0.5) 90deg 180deg);
    background-size: 100%, 1em 1em;
    transform: translate(-50%, -50%) rotateX(90deg);
  
  }

  .cube{
    position: absolute;
    width: 2em;
    height: 2em;
    transform-style:preserve-3d ;
    top: -1em;
    left: -1em;
    animation: rotate 20s cubic-bezier(0, -0.16, 0, 1.14) infinite; 
    
  
  }
  
  .center{
    position: absolute; 
    width: 0.25em;
    height: 0.25em;
    border-radius: 50%;
    background-color: rgb(240 64 250 / 1);
    transform: translate(-50%, -50%);
  }
  
  .front, .back, .left, .right,.top,.bottom{
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: rgb(270,255,188,0.387);
    box-shadow: inset 0 0 0.5em 0 rgb (12 24 36/rgb(0,0,0,0.75 ));
  }

  .front{
    transform: translateZ(1em);
  }
  
  .back{
    transform: rotateY(180deg) translateZ(1em);

  }
  
  .right{
    transform: rotateY(90deg) translateZ(1em);
    
  }
  
  .left{
    transform: rotateY(90deg) translateZ(-1em);
    
  }
  
  .top{
    transform: rotateX(-90deg) translateZ(-1em);
  }
  
  .bottom{
    transform: rotateX(-90deg) translateZ(1em);
  }
  
  .ball{
    position: absolute;
    width: 1em;
    height: 1em;
    border-radius: 50%;
    left: -.5em;
    bottom: 1em;
  }

  @keyframes rotate{
    0%{
      transform: rotateY(0deg);
    }
    100%{
      transform: rotateY(360deg);
    }
  }