with fixed col-6 width and fixes 2 blue boxes height</div> <div class="col-sm-3 panel heightbox the col size will change from 3 to 6 in the PHP</div> <div class="col-sm-3 panel heightbox the c
width = 21
middle = [['#']+[' ']*(width-2)+['#'] for i in range(heightfield = top + middle + top
>>> middle = [['#']+[' ']*(width-2)+['#'] for i in range(height