\documentclass{minimal}
\usepackage{amsmath}
\usepackage{tikz}
\begin{document}

\tikz \fill[green] rectangle (0.5,0.5); Something
    about something.

    \[
  1+1
      \]

\begin{align}
    2+2=4
\end{align}

\begin{itemize}
\item item is indented twice
      and the next line is indented to match
\end{itemize}

\begin{equation}
  \left.
      f(x) = 3
\right.
\end{equation}

{
    asdasd
  }

  \end{document}