\documentclass{article}
\usepackage{tikz}
\def\pgfsysdriver{pgfsys-tex4ht.def}
% use `htlatex sample.tex` to compile this
\begin{document}
\begin{tikzpicture}
    \draw (0,0) -- (1.95,0);
    \draw (2.05,0) -- (3,0);
    \draw (0.95,-0.95) -- (1.95,-0.95);
    \draw (1.05,-1.05) -- (1.95,-1.05);
    \draw (0,-3) -- (0.95,-3);
    \draw (1.05,-3) -- (1.95,-3);
    \draw (2.05,-3) -- (3,-3);
    \draw (0,0) -- (0,-3);
    \draw (0.95,-0.95) -- (0.95,-3);
    \draw (1.05,-1.05) -- (1.05,-3);
    \draw (1.95,-1.05) -- (1.95,-3);
    \draw (1.95,0) -- (1.95,-0.95);
    \draw (2.05,0) -- (2.05,-3);
    \draw (3,0) -- (3,-3);
\end{tikzpicture}
\end{document}