The CSS letter-spacing property defines the width of inter-glyph gaps, not the spacing of individual glyphs. This is different from the traditional graphic design view of letter spacing as the glyph + spacing width.
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0.25emaaaa
0.5emaaaa
0.75emaaaa
1emaaaa
1.25emaaaa
1.5emaaaa
1.75emaaaa
2emaaaa
abababababab
abababababab
normalaaaa
0aaaa
0.25emaaaa
0.5emaaaa
0.75emaaaa
1emaaaa
1.25emaaaa
1.5emaaaa
1.75emaaaa
2emaaaa
abababababab
abababababababababab
normalAs a result of these efforts we have distilled a set of arinciales
0As a result of these efforts we have distilled a set of arinciales
0.1emAs a result of these efforts we have distilled a set of arinciales
0.2emAs a result of these efforts we have distilled a set of arinciales
0.5emAs a result of these efforts we have distilled a set of arinciales
abababababababababab
abababababababababab
normalAs a result of these efforts we have distilled a set of arinciales
0As a result of these efforts we have distilled a set of arinciales
0.1emAs a result of these efforts we have distilled a set of arinciales
0.2emAs a result of these efforts we have distilled a set of arinciales
0.5emAs a result of these efforts we have distilled a set of arinciales
abababababababababab
abababababababababab
normalAs a result of these efforts we have distilled a set of arinciales
0As a result of these efforts we have distilled a set of arinciales
0.1emAs a result of these efforts we have distilled a set of arinciales
0.2emAs a result of these efforts we have distilled a set of arinciales
0.5emAs a result of these efforts we have distilled a set of arinciales
abababababababababab
abababababababababab
normal青巻紙赤巻紙黄巻紙
0青巻紙赤巻紙黄巻紙
0.1em青巻紙赤巻紙黄巻紙
0.2em青巻紙赤巻紙黄巻紙
0.5em青巻紙赤巻紙黄巻紙
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