<!DOCTYPE html>
<div style="float:left; line-height:100px; width:25px ; height:100px; border-style:solid">
<span>t</span>
</div
<!DOCTYPE html>
<div style="float:left;width:25px ; height:100px; border-style:solid">
<div style="height:100px; display:table-cell; vertical-align: middle;">
<span>t</span>
</div>
</div