From your store's Dashboard click the Site Designer icon in the left Navigation Menu.
Hover over the Header Block and click the Edit Template button that appears on the left side of the Block.
You may now edit the Header Block using the controls on the left. Click the Done button when you have completed your changes. If you are ready to apply the changes to your live site, click the Publish button located a the top left of the Site Designer page. The Header is a block from your Master Template, it will appear on all pages of your site.
Header Block Controls
Trash Can Icon to Delete Block
Arrows to move block up or down the page
Top bar:
Enable Slider
Show phone icon Slider
Enable map marker icon Slider
Left text Edit Text Button
Center Text Edit Text Button
Right text Edit Text Button
Nav Menu:
Display as
Padding for top level menu links when displaying as "Row" Scale
Logo:
Align left Slider
Override store settings logo image Slider
Change Image button
Override store settings text logo with
Button:
Enable Slider
Text Field
Link Field
Button Style
Search:
Enable Slider
Display as
Placeholder text Field
Icons:
Enable account Slider
Enable cart Slider
Other Settings:
Enable bottom border Slider
Make menu links uppercase Slider
Font weight
Header Colors:
Top background color
Top text color
Bottom background color
Bottom text color
Bottom link hover color
Bottom border color
Nav Menu Colors:
Nav menu background color
Nav menu text color
Nav menu background hover color
Nav menu text hover color
Sub-nav menu background color
Sub-nav menu text color
Sub-nav menu background hover color
Sub-nav menu text hover color
Make sure to click the Done button at the bottom of the block edit section to save your changes. Additionally, you will need to click the green Publish button at the top of the page to make your changes live on your store.