mdframed Section Spacing

Question

Code:

\documentclass[12pt]{article}
\usepackage[framemethod = tikz]{mdframed}
\usepackage{enumitem}
\usepackage[margin=1in]{geometry} 
\begin{document} 
    \begin{mdframed}
%       \section*{Objective:}
        \begin{itemize}
            \item To become familiar with the measurements in electric circuits
            \item To determine the equivalent resistances of series and parallel combinations
            \item To use Kirchhoff's laws
        \end{itemize}
    \end{mdframed}
    \begin{mdframed}
        \section*{Objective:}
        \begin{itemize}
            \item To become familiar with the measurements in electric circuits
            \item To determine the equivalent resistances of series and parallel combinations
            \item To use Kirchhoff's laws
        \end{itemize}
    \end{mdframed}
\end{document}

Output:

As we can see, the section header produces extra whitespace between itself and the top of the mdframed box. How much whitespace does it produce, and how to remove it?

Answer 1

Here is an alternative using a customized box with the help of the tcolorbox package:

\documentclass[12pt]{article}
\usepackage{enumitem}
\usepackage{tcolorbox}

\newtcolorbox{mybox}
{
  colback  = white,
  sharp corners, 
  boxrule=1pt
}
\usepackage[margin=1in]{geometry} 
\begin{document} 
    \begin{mybox}
%       \section*{Objective:}
        \begin{itemize}
            \item To become familiar with the measurements in electric circuits
            \item To determine the equivalent resistances of series and parallel combinations
            \item To use Kirchhoff's laws
        \end{itemize}
    \end{mybox}
    \begin{mybox}
        \section*{Objective:}
        \begin{itemize}
            \item To become familiar with the measurements in electric circuits
            \item To determine the equivalent resistances of series and parallel combinations
            \item To use Kirchhoff's laws
        \end{itemize}
    \end{mybox}
\end{document}