Resizing the Search Bar Within Sidebar Widget
Today while working on another blog, I wanted to add a search bar to one of my sidebars. Thinking I’d just use the search bar within the SideBar Widget, I dragged it to the area I wanted it to show and should have been done. The problem I came across was the bar was too short to look pleasing and I also wanted the submit button on the same line, not under it.
Changing search bar size:
under Presentation, choose Theme-editor. In the theme editor the file we want to change is Stylesheet. Using your browser search (usually CTRL-F) search for the word search, clicking next until you find this code (or close)
li#search #s {
border: 1px inset #666;
font-family: verdana, helvetica, sans-serif;
font-size: 12px;
margin: 0;
padding: 2px;
width: 45%;
The width is what you want to change (shown as 45%). You may have to try a couple different sizes till the search bar fits the area you have it located.
Search Bar and Submit button on the same line:
This will take a bit more work. The file widgets.php, this is the plugin file found in the SideBar widgets plugin.
Change this code:
to this code (make it all one line)

if you notice that changing these files isn’t doing anything, check to see if there is a searchform.php which can be taking control and you can make changes in that file