How to specify the bottom position of 3D elements with CSS

To specify the bottom position of 3D elements, use the perspective-origin property.

You can try to run the following code to implement the perspective-origin property:


Live Demo 

<!DOCTYPE html>
         .demo1 {
            position: relative;
            width: 150px;
            height: 150px;
            background-color: yellow;
            perspective: 80px;
            margin: 50px;
            perspective-origin: left;
         .demo2 {
            position: absolute;
            padding: 20px;
            background-color: orange;
            transform-style: preserve-3d;
            transform: rotateX(45deg);
      <div class="demo1">Demo
         <div class="demo2">Demo