Each of the above three tables has 2 rows and 2 columns, with all the 4 cells having:

• width and height 80px,
• padding right and bottom 40px,
• border right and bottom 20px.

The second table has layout: fixed, the third has border-collapse: collapse.

width on cell (td) is interpreted as:

• content-box width in: IE/Win/auto, IE/Win/fixed/standards, Gecko1.8+, Opera9+, Safari3+
• border-box width in: IE/Win/fixed/quirks

height on cell (td) is interpreted as:

• content-box height in: IE/Win/standards, Safari3+/standards
• border-box height in: IE/Win/quirks, Gecko1.8+, Opera9+, Safari3+/quirks

This page in quirks mode: table cells & box model (quirks)

table & box model

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