If you, as a website owner, have a large, complex website with hundreds of pages and links to other subpages, then you should definitely consider adding some means of searching for content. Adding a basic search function enables your visitors to find exactly what they are after in a few seconds; both saving time and avoid getting them so frustrated and mad that they leave your website. An example of this is e-commerce websites or a well-developed blog where there are far too many categories for an individual to look through.
This can be extremely difficult if someone is trying to find a certain item among all of those pages and links. The search bar that you have recently added can help them escape such situations where they get stuck in your navigation. If for some reason they cannot find any more reasonable places to go afterwards, then the search function helps them out. This way, you can ensure maximum performance from your website and the visitors will stay in your site for much longer times.
The code below features a CSS search box with a grey background. This Bootstrap search box is more than enough for your website as it offers all the basic elements of an effective search bar. This is also a right-side search box meaning it is located on the right side of the page. If you are interested, you can use this Bootstrap right side search box in your own website for literally no costs.