fix side tab

bind.sty

@@ -89,7 +89,7 @@
 					align=center,
 					anchor=north west
 				]
-				at ($ (current page.north west) + (-0cm,-2*\thechapshift cm) $)
+				at ($ (current page.north west) + (-0cm,-1*\thechapshift cm) $)
 				{\rotatebox{90}{\hspace*{.3cm}\parbox[c][1.5cm][t]{3.4cm}{%
 					\raggedright\textcolor{white}{\scshape\leftmark}}}};
 				\end{tikzpicture}%