Fix section page margins

beamerinnerthemepolimi.sty

@@ -75,7 +75,7 @@
         \node (foot) at (current page.south) [anchor=south, minimum width=\paperwidth, minimum height=0.4415\paperheight, fill=bluePolimi] {};
         \node at ([shift={(0, -0.1)}] foot.north) {\includegraphics[width=\paperwidth]{decoration.pdf}};
         \path let \p1 = ([shift={(0, 0.105\paperheight+0.25)}] current page.south west), \p2 = (current page.east) in (\x1, \y1) edge [white, line width=0.5] (\x2, \y1);
-        \node at ([shift={(\xshift, 3.5)}] current page.south west) [anchor=north west, inner sep=0pt, text width=\textwidth+1cm]
+        \node at ([shift={(\xshift, 3.5)}] current page.south west) [anchor=north west, inner sep=0pt, text width=\textwidth]
         {
             {\color{white}\Large\bf \insertsection}
         };
@@ -90,7 +90,7 @@
     \node (foot) at (current page.south) [anchor=south, minimum width=\paperwidth, minimum height=0.4415\paperheight, fill=bluePolimi] {};
     \node at ([shift={(0, -0.1)}] foot.north) {\includegraphics[width=\paperwidth]{decoration.pdf}};
     \path let \p1 = ([shift={(0, 0.105\paperheight+0.25)}] current page.south east), \p2 = (current page.west) in (\paperwidth,\y1) edge [white, line width=0.5] (\x2,\y1);
-    \node at ([shift={(\xshift, 3.5)}] current page.south west) [anchor=north west, inner sep=0pt, text width=\textwidth+1cm]
+    \node at ([shift={(\xshift, 3.5)}] current page.south west) [anchor=north west, inner sep=0pt, text width=\textwidth]
     {
         {\color{white}\Large\bf \insertsubsection}
     };