article h1

section h1

article h1

header 1

Do not think of heading tags as simple titles. They define a new, implicit, section in the document outline when they aren't the first heading of their parent, explicit, sections.
Ambient IDE - Document Outliner

header 2

header 3

article h1

section h1

article h2

article h3

article h4

article h5
article h6

article h1

section h1

article h1

header 1

header 2

header p

heading h3

heading 4

heading 5
heading 6

footer h1

footer h2

footer h3

footer h4

footer h5
footer h6

section h1

section h1

article h1

header 1

header 2

header 3

section h1


article h1

header 1

section h2

section footer p

article footer p


article h1

section h1

section h1

section h1


article h1

section h1

section h1

section h1

section h1

section h1


article h1

section h1

section h1

section h1

section h1

section h1

section h1


Tables

My table caption
Details summary

Example for a simple table

Item Qty Price
Don’t Make Me Think by Steve Krug In Stock 1 $30.02
A Project Guide to UX Design by Russ Unger & Carolyn Chandler In Stock 2 $52.94 $26.47 × 2
Introducing HTML5 by Bruce Lawson & Remy Sharp Out of Stock 1 $22.23
Total $148.90
My table caption
Details summary

Example for a complex table

Column header: Item Column header: Qty Column header: Price
Row Group
Don’t Make Me Think by Steve Krug In Stock 1 $30.02
A Project Guide to UX Design by Russ Unger & Carolyn Chandler In Stock 2 $52.94 $26.47 × 2
Introducing HTML5 by Bruce Lawson & Remy Sharp Out of Stock 1 $22.23
Bulletproof Web Design by Dan Cederholm In Stock 1 $30.17
Row Group
Row header: Whiskey Cell b1 Cell c1 Cell d1
Row header: Ghost Cell b2 Cell c2 Cell d2
Don’t Make Me Think by Steve Krug In Stock 1 $30.02
A Project Guide to UX Design by Russ Unger & Carolyn Chandler In Stock 2 $52.94 $26.47 × 2
Column Group Column Group
Col a Col b
Row 1 Row 1-1 Cell a-1-1 Cell b-1-1
Row 1-2 Cell a-1-2 Cell b-1-2
Row 2 Row 2-1 Cell a-2-1 Cell b-2-1
Row 2-2 Cell a-2-2 Cell b-2-2
Subtotal $135.36
Tax $13.54
Total $148.90