To change the layout style for the search page, you first need to open any page by navigating to the WordPress admin > Pages and select the page on that you want to change the layout style. Click on the view button and edit.
See the image below for more understanding.
Enter the keyword and click on the search icon to edit the page layout. Once the page opens, click the “right-click” to edit the Litho Archive Posts Widget to change page layout styles.
See the image below for more understanding.
This way you can change layout styles for the search page.