The creation of a 3D text effect in CSS involves using the CSS text-shadow property. Please keep in mind that this property may not be supported in all browsers. Here are the basic steps to create a simple 3D effect:
```
h1 {
color: white;
font-size: 5em;
text-shadow: 2px 2px 0px #000,
4px 4px 0px #000,
6px 6px 0px #000,
8px 8px 0px #000,
10px 10px 0px #000,
12px 12px 0px #000;
}
```
In the above CSS, ‘h1’ is the selector and we have used the ‘color’, ‘font-size’, and ‘text-shadow’ properties to style the selected element(s). The ‘color’ and ‘font-size’ properties are self-explanatory, but ‘text-shadow’ may need some explanation.
The ‘text-shadow’ property has four values:
1. Horizontal offset – Positive values move the shadow to the right and negative values move it to the left
2. Vertical offset – Positive values move the shadow down and negative values move it up
3. Blur radius – The higher the number the more blurred the shadow will be
4. Color – The color of the shadow.
In order to make the text look 3D, we have to set the text color and shadow color in contrast and continuously increase the horizontal and vertical offsets. The number of shadows and their offsets can be adjusted to suit your design needs, but keep in mind that too many shadows may cause performance issues.
To see the output of the above code, you should have an ‘h1’ tag in your HTML file:
```
