If you paste the following code snippet into functions.php and save or upload it, the default div id gallery will be replaced by the div class gallery in the example below, which you can style in css.
I created a simple wordpress plugin to customize the built-in pagination, but you can also use the code snippet. read more
The posts pagination
If you don't like the navigation of the previous page of the next page, but want to display it in page numbered order, you don't need a custom plugin. WordPress has this feature! read more
Search results example – The search.php
Create a file named search.php. Insert the following code and upload it to the current template directory. read more
Search form example
This code snippet, when pasted into the sidebar, will display a search form. read more

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I have created a new version of the plugin. Changed the design, made the copy button responsive, added numbered lines, syntax highlighting of the code. read more