header.php
and later maybe u ll have to edit searchbox css, or top menu css.
You can do it in Photoshop or any other editing software, coz it is just photo.
I mean, just crop some place in image and draw searchbox.
Hahahahaha.
For such question you need to provide website link, not an image.
Different browsers read things differently.
You can not please every browser.
Chrome and Firefox are the most important.
