Specify that the space between words in paragraphs should be n pixels:

Example (spacing with 10px)

<p style="word-spacing:10px;">
the quick brown red fox jumps over the lazy dog
</p>

Output:

the quick brown red fox jumps over the lazy dog

Example (spacing with 30px)

<p style="word-spacing:30px;">
the quick brown red fox jumps over the lazy dog
</p>

Output:

the quick brown red fox jumps over the lazy dog