andy101scott

I found in the CCS code for VFB plugin editor
visual-form-builder/css/visual-form-builder.css

that where the height of s/m/l was set the code for small was labelled medium (as was the code for medium)

So good they named it twice!

Code below shows corrected code:
.visual-form-builder.left-label .textarea, .visual-form-builder.right-label .textarea{float:left;width:65%;}
textarea.small{height:5.5em;}
textarea.medium{height:10em;}
textarea.large{height:20em;}
.submit{font-size:1.1em;}