Q: Remove thin border around mdframed title I get a thin border around the title of a mdframed environment which has the color of the actual content area: 
I want to get rid of this thin red line around the title.
MWE:
\documentclass{article}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}

\usepackage[usenames]{color}

% framemethod=TikZ is required to draw rounded corners
\usepackage[framemethod=TikZ]{mdframed}

\begin{document}

\mdfdefinestyle{eliasp}{%
    roundcorner=3pt,
    frametitlebackgroundcolor=yellow,
    backgroundcolor=red,
    hidealllines=true,
    frametitle=This is the title,
}

\begin{mdframed}[style=eliasp]
    This is some text
\end{mdframed}

\end{document}

