spanngle

Login to dashboard
Go to Appearance
Go to Editor
Open header.php
paste the code

<div class="searchform"><?php get_search_form(); ?></div>

before the closing of div tag for access. </div><!-- #access -->

and put the corresponding css code in the style.css

For this follow the same step

Go to Appearance
Go to Editor
Open style.css
paste the below code

.searchform
{
margin:10px 10px 10px 0px;
float: right;
}