How to make Big search form in header

If Search form is very important part of your site, you may want to highlight it in header and make much more big

For this. Go to theme option – general – custom css and add next code [type="submit"]{height:40px; line-height:40px; padding: 0 16px} input[type="text"]{padding-left:15px; height:40px}
header .search{max-width:500px; width:100% !important}

This will make search form in header bigger