Use the cursor property. To make it custom use the folling:

body{
  cursor:url(CURSOR_PNG.png);
}

Looking at your site, you can use the built-in crosshair property.

body{
  cursor: crosshair;
}

Use the cursor: property.
You can use the default cursors, or use a custom image (url(image.png)).
Here's a link to all the default cursors: https://www.w3schools.com/csSref/pr_class_cursor.asp

Solution

use the cursor property in css. Like this.

body {
  cursor: pointer;
}

that's it you want it like a clicking cursor.

body {
  cursor: not-allowed;
}

disabled cursor above.

body {
  cursor: wait;
}

to wait. And many more. Here's a link, that gives the entire list.

https://www.w3schools.com/cssref/pr_class_cursor.asp

Like that.
That should work

You can use the CSS cursor property.

body{
   cursor:pointer;
}

You can even make the cursor an image!
More resources: https://www.w3schools.com/cssref/pr_class_cursor.asp