How to Edit WordPress Mastheads

Change Masthead Theme Options
1. Log in to your WordPress administration area by launching your web browser and typing your domain name, followed by '/wp-admin/' into the address bar. Press 'ENTER.'
2. Type your username and password into the displayed text fields, then click 'Log In.'

3. Click the 'Theme Options,' 'Header' or 'Masthead' link under 'Appearance' in the menu on the left side of the WordPress dashboard.
4. Click 'Choose' or 'Browse' in the 'Logo' or 'Header Image' section. Select an appropriately sized and formatted image file from your computer (size and format requirements change based on the chosen theme) and click 'Open.' Click 'Upload' to upload the image and display it in your masthead.
5. Type the title of your blog into the 'Blog Name' or 'Title' text field. Type your tagline or company slogan in the 'Tagline' text field. Type in any additional information you wish to display in the masthead in the appropriate text fields. Masthead and header options will differ depending on the chosen theme.
6. Click 'Save Options' at the bottom of the web page to save the masthead changes.
Change Masthead CSS
7. Click the 'Editor' link in the 'Appearance' menu.
8. Click to choose the 'style.css' page in the 'Styles' section on the right side of the screen. This opens the 'style.css' page for editing.
9. Locate the '#header' class in the code display window. This CSS class controls how the masthead and header will be displayed. Editing the '#header' class requires knowledge of CSS tags and values.
10. Click 'Update File' to save the 'style.css' page with the edited code.