Use CSS code to style your site headers with borders and other design elements. HTML and CSS use a box model, which means that page elements include margins, padding, background colors and ...

Many Blogspot themes stretch header images across your blog's whole width, ... Paste the following code into the "Add Custom CSS" box: Click "Apply to Blog." Advertisement. Article continues below ...

CSS: Enter CSS to be applied to the HTML used in your tests. It is placed between <style> elements in the header portion of the page. HTML: This area allows you to enter HTML to be used in your tests.