Apsara Aruna

This is customized your search form to the full screen search box.
How to use it 
*Only you have to do after the installation, add custom link to you menu and type url to ‘#search’. you can put Link text as you wish.
Also see my other plugins 
* <a href="https://wordpress.org/plugins/widget-youtube-subscribtion/" title="Easy Subscribe Button Widget" rel="ugc">Easy Subscribe Button Widget</a> 
* <a href="https://wordpress.org/plugins/embed-page-facebook/" title="Easy Embed Page Widget" rel="ugc">Easy Embed Page Widget</a> 
* <a href="https://wordpress.org/plugins/browser-scroll-bar/" title="Browser Scroll Bar" rel="ugc">Browser Scroll Bar</a>

Easy Full Screen Search

This is customize you search form to full screen search box.

VarDump s.r.l.

Get the PRO version: <a href="https://www.advancedcustomsearch.com/" rel="nofollow ugc">https://www.advancedcustomsearch.com/</a>
Advanced Post Search is a WordPress plugin for anyone who needs an advanced search for posts (or custom posts) in WordPress admin. 
Easily find posts by performing complex queries directly from the posts list and using specific filters for each field. It works with any post type and custom post type.
Advanced Post Search lets you search posts by any post attribute; search by:
<ul>
<li>Post Title</li>
<li>Post Content</li>
<li>Post Publish (date or date interval)</li>
<li>Post Last Modified (date or date interval)</li>
<li>Post Status</li>
<li>Post Password</li>
<li>Post Author</li>
<li>Post Excerpt</li>
<li>Post Slug</li>
</ul>
Specify which comparison operator you want to use; each field has its own comparison operators, according to the field type: for example, in <code>text</code> fields you can perform a <code>strict</code> or a <code>like</code> search.
You can manage search preferences from <code>Advanced Post Search » Views</code> in order to show/hide any search field for each post type.
<h4>Advanced Post Search PRO</h4>
Unlock extra features by upgrading Advanced Post Search to PRO version: 
<a href="https://www.advancedcustomsearch.com/" rel="nofollow ugc">https://www.advancedcustomsearch.com/</a>
<ul>
<li>Advanced Custom Fields support</li>
<li>Search posts by any of ACF custom fields (text, images, etc.)</li>
</ul>
<h4>Tested on</h4>
<ul>
<li>Microsoft Windows – Google Chrome</li>
<li>Microsoft Windows – IE9+ / Edge</li>
<li>Mac OS X – Firefox</li>
<li>Mac OS X – Google Chrome</li>
</ul>

Advanced Post Search

Add a search form based on Wordpress fields in posts list

Easy Full Screen Search vs Advanced Post Search