A span is normally a inline element so setting a width to it might not have the effects you are looking for.
In order to “force” a span to have a width it can be set as a inline-block
<span style="display:inline-block;width:92px;"> </span>
another (better!) way is to use padding to give the span a size.
<span style="padding: 10px 20px; font-size: 0px;"> </span>
(The font-size is here to “fix” the height of the span; and don’t forget that padding happens on both sides in this example so the end result is 20x40px)