<html><head><style> #t1 { tab-size: 4; /* Firefox */ tab-size: 4;}#t2 { tab-size: 16; /* Firefox */ tab-size: 16;}</style></head><body><h1>The tab-size Property</h1><pre id="t1">I use tab-size 4</pre><pre id="t2">I use tab-size 16</pre><p><strong>Note:</strong> Firefox supports an alternative, the -moz-tab-size property.</p></body></html>