You can customize the “Layer” wrapper using the Combo Blocks plugin. This article will help you to customize the layer block wrapper.
Layer Block is only accessible inside Layers Block.
To Begin, insert a Layers Block. Inside the layer block, add a layer Block.

Now, insert some content inside the layer block. For Example, I add a Post Title block.

Click on the “Wrapper” tab of Layer Block.

You can switch the wrapper tag to various options, including H1, H2, H3, H4, H5, H6, SPAN, DIV, and P tags.

To add style to the Layer block, click on the style tab and add some style properties.
