You can use the chrome method to code CSS. F12 and code what you want

Create child theme, then add function get_sidebar() in the index.php

You can install a plugin for sidebar which provideyou a short code. You can place this short code where you want.
Thanks

Go to Appearance > Customize in the WordPress Administration Screens and click the Widget menu in the Theme Customizer. ...
Open the sidebar to which you wish to add the Text Widget.
Find the Text Widget in the list of Widgets.
Click and drag the Widget to the spot you wish it to appear.

Hi,

You can only setup your sidebar widgets if function there. If there are not sidebar widgets setup function, so you should create a sidebar setting area in your theme. Then you will be able to setup any type widgets from WordPress plugins.

Thank you.

Hello Guys,Widget is a Fancy word for tools or content that you can add, arrange, and remove from the sidebar of your website or blog..

#programming #widget #wordpress