v-centre table contents

layout.sty

@@ -751,6 +751,7 @@ interior code={ \path[tcb fill interior] ([xshift=-2mm]interior.west)
 % Make floats hug the text.
 \setlength\intextsep{0em}
 
+\renewcommand\tabularxcolumn[1]{m{#1}}
 \newcolumntype{Y}{>{\centering\arraybackslash}X}
 \newcolumntype{L}{>{\raggedright\arraybackslash}X}