# How to remove blur edges from Frankfurt theme in Beamer?

I like this Frankfurt theme but I don't like the blurriness at the frame title edges. Though there is a lot of themes available for beamer like boxes, AnnArbor and has sharp edge. I will be very grateful to you if you help me to fix this problem by set the frame title edges into sharp.

It will also be appreciating if you could remove the shadow from the Block and make it's corner radius into 0%.

\documentclass[aspectratio=169]{beamer}
\usetheme{Frankfurt}    % Frankfurt, boxes, Luebeck, Boadilla, AnnArbor, Antibes
\usecolortheme{crane}    % albatross, crane,
\usefonttheme{structurebold}
\usepackage{bookman}
\setbeamertemplate{title page}[default][colsep=-4bp,rounded=false]  % title page
\begin{document}
%---------------------------------------------------
\section{Section Name}
\subsection{Subsection Name}
%---------------------------------------------------
\begin{frame}[c,    % vertical align [c, t, b]
allowframebreaks,
allowdisplaybreaks]
{This is frame title}
{Frame subtitle}
This is frame content...
\begin{block}{Block title}
This is Block content....
\end{block}
\end{frame}
\end{document}

• With \setbeamertemplate{blocks}[default] you can remove the rounded edges and shadows around the blocks. – leandriis Jun 11 '18 at 7:59

The Frankfurt theme uses

• the smoothbars outer theme, which is basically the miniframes theme plus the colour transitions, so you could directly use the miniframes theme

• it calls the rounded inner theme with the shadow option -> use it without this option instead

\documentclass[aspectratio=169]{beamer}

\mode<presentation>

\useoutertheme[subsection=false]{miniframes}
\usecolortheme{orchid}
\usecolortheme{whale}

\setbeamerfont{block title}{size={}}

\mode
<all>

\usecolortheme{crane}    % albatross, crane,
\usefonttheme{structurebold}
\usepackage{bookman}
\setbeamertemplate{title page}[default][colsep=-4bp,rounded=false]  % title page

\begin{document}
%---------------------------------------------------
\section{Section Name}
\subsection{Subsection Name}
%---------------------------------------------------
\begin{frame}[c,    % vertical align [c, t, b]
allowframebreaks,
allowdisplaybreaks]
{This is frame title}
{Frame subtitle}
This is frame content...
\begin{block}{Block title}
This is Block content....
\end{block}
\end{frame}
\end{document}


• Wow, it is working. thank you so much @samcarter – Ravi Jun 11 '18 at 8:51