The plugin displays search form in the navigation bar which can be configured from the admin area.
Search box on Navigation Menu allows you to add search form in your site navigation bar that makes users to search your site easily.
The plugin provides you various settings in the admin area which you can use to customize the search form.
Some functions adapted from the plugin Add Search To Menu by Vinod Dalvi.
Plugins -> Add New -> Search
and search for Search box on Navigation Menu).wp-content/plugins/
directory of your WordPress installation).Settings -> Search box on Navigation Menu
to configure the pluginPlugins -> Add New -> Search
and search for Search box on Navigation Menu).wp-content/plugins/
directory of your WordPress installation).Settings -> Search box on Navigation Menu
to configure the pluginYes, it will work with any standard theme.
By default it will use theme style. You can add class (there is option) and add custom CSS under Customize > Additional CSS
Please make sure you have configured the plugin settings from Settings -> Search box on Navigation Menu