I have a HTML structure and this is based on Bootstrap template:
<div class="row">
<div class="col-md-1"><span>Text</span></div>
<div class="col-md-11"></div>
</div>
I rotated text
to 90 degree:
transform: rotate(90deg);
How to place this block <span>Text</span>
by vertical center independent of parent block height?
Schema is: