Show Sidebar at the top of Content in Mobile Devices

If you are using a Responsive theme, then you must be familiar with the stacked layout of your theme in mobile devices starting from iPad and other small devices than that. In smaller devices the Content part displays full width below your header and then the sidebar below that.

Adding Search Box in your site

Search box is an important aspect for a site. WordPress generally provides a default Search Box widget with its package which you can use in any Widget area by going to Appearance > Widgets and Drag the Search Widget from the Available Widgets section to any widget based area provided by your Theme.