\begin{saveblock}{adjustbox}
    \begin{highlightblock}[linewidth=0.6\textwidth,gobble=8]
        Lorem ipsum.

        \adjustbox{
        cframe=blue!50!white 1pt 6pt 3pt,
        bgcolor=blue!10!white,
        }{%
         \parbox
         {\dimexpr\linewidth - 20pt\relax}
         {%
            Quisque porta feugiat tortor
            tristique porta.
         }%
        }
    \end{highlightblock}
\end{saveblock}

\begin{frame}
    \frametitle{Adjustbox}

    \begin{columns}
        \begin{column}{0.6\textwidth}
            \hll|\\usepackage\{adjustbox,xcolor\}|

            \useblock{adjustbox}
        \end{column}
        \begin{column}{0.4\textwidth}
            Lorem ipsum.

            \adjustbox{
            cframe=blue!50!white 1pt 6pt 3pt,
            bgcolor=blue!10!white,
            }{%
             \parbox
             {\dimexpr\linewidth - 20pt\relax}
             {%
                Quisque porta feugiat tortor
                tristique porta.
             }%
            }
        \end{column}
    \end{columns}
\end{frame}

\begin{saveblock}{code1}
    \begin{highlightblock}[linewidth=0.6\textwidth,gobble=8]
        \usepackage{environ}

        \NewEnviron{important}{
         \par
         \adjustbox{
         cframe=blue!50!white 1pt 6pt 3pt,
         bgcolor=blue!10!white,
         }{%
         \parbox
         {\dimexpr\linewidth - 20pt\relax}
         {\BODY}%
         }
        }
    \end{highlightblock}
\end{saveblock}

\begin{saveblock}{code2}
    \begin{highlightblock}[linewidth=0.4\textwidth,gobble=8]
        \begin{important}
            Lorem ipsum ...
        \end{important}
    \end{highlightblock}
\end{saveblock}

\begin{frame}
    \frametitle{Adjustbox}

    \begin{columns}
        \begin{column}{0.6\textwidth}
            \useblock{code1}
        \end{column}
        \begin{column}{0.4\textwidth}
            \useblock{code2}
        \end{column}
    \end{columns}
\end{frame}