2.1.101 [CSS-Level2-2009] Section 16.6.1, The 'white-space' processing model
V0158:
-
1. Each tab (U+0009), carriage return (U+000D), or space (U+0020) character surrounding a linefeed (U+000A) character is removed if 'white-space' is set to 'normal', 'nowrap', or 'pre-line'.
Quirks Mode and IE7 Mode (All Versions)
The pre-line value of the white-space
property is not supported.
V0159:
-
3. If a space (U+0020) at the end of a line has 'white-space' set to 'normal', 'nowrap', or 'pre- line', it is also removed.
Quirks Mode and IE7 Mode (All Versions)
White space at the end of the line is not removed.
V0259:
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If 'white-space' is set to 'pre' or 'pre-wrap', any sequence of spaces (U+0020) unbroken by an element boundary is treated as a sequence of non-breaking spaces. However, for 'pre-wrap', a line breaking opportunity exists at the end of the sequence.
Quirks Mode and IE7 Mode (All Versions)
The pre-wrap value of
the white-space property is not supported, and is treated as normal so
that sequences of spaces are collapsed.
V0260:
-
As each line is laid out, 1. If a space (U+0020) at the beginning of a line has 'white-space' set to 'normal', 'nowrap', or 'pre-line', it is removed.
IE8 Mode and IE9 Mode (All Versions)
A space at the beginning of the line is removed if the white-space
property is set to pre-wrap.
Quirks Mode (All Versions)
A space at the beginning of the line is removed if the white-space
property is set to pre.
V0261:
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2. All tabs (U+0009) are rendered as a horizontal shift that lines up the start edge of the next glyph with the next tab stop. Tab stops occur at points that are multiples of 8 times the width of a space (U+0020) rendered in the block's font from the block's starting content edge.
Quirks Mode (All Versions)
Tabs are not rendered.