diff --git a/preamble.tex b/preamble.tex
index 8904631e56b321ae9949bae9311e359ca369bd4c..3922a01eef063f907d2e2b3d0d18e9f399b96836 100644
--- a/preamble.tex
+++ b/preamble.tex
@@ -26,7 +26,22 @@
 \usepackage{colortbl}
 \usepackage[poster]{tcolorbox}
 \tcbuselibrary{breakable,raster}
-\tcbset{enhanced, attach boxed title to top center={yshift*=-3mm},drop shadow east,colback=white,arc=6mm,outer arc=1mm}
+%\tcbset{enhanced, attach boxed title to top center={yshift*=-3mm},drop shadow east,colback=white,arc=6mm,outer arc=1mm}
+
+\tcbset{enhanced, drop shadow east,
+colframe=black,colbacktitle=black!5!white,
+fonttitle=\bfseries,coltitle=black,attach boxed title to top center=
+{yshift=-0.25mm-\tcboxedtitleheight/2,yshifttext=-2mm-\tcboxedtitleheight/2},
+boxed title style={boxrule=0.5mm,
+frame code={ \path[tcb fill frame] ([xshift=-4mm]frame.west)
+-- (frame.north west) -- (frame.north east) -- ([xshift=4mm]frame.east)
+-- (frame.south east) -- (frame.south west) -- cycle; },
+interior code={ \path[tcb fill interior] ([xshift=-2mm]interior.west)
+-- (interior.north west) -- (interior.north east)
+-- ([xshift=2mm]interior.east) -- (interior.south east) -- (interior.south west)
+-- cycle;}
+}
+}
 
 %%%%%%%%%% Section Headers %%%%%%%%%%