documentclass[
11pt, % The default document font size, options: 10pt, 11pt, 12pt
%oneside, % Two side (alternating margins) for binding by default, uncomment to switch to one side
french, % ngerman for German
singlespacing, % Single line spacing, alternatives: onehalfspacing or doublespacing
%draft, % Uncomment to enable draft mode (no pictures, no links, overfull hboxes indicated)
%nolistspacing, % If the document is onehalfspacing or doublespacing, uncomment this to set spacing in lists to single
%liststotoc, % Uncomment to add the list of figures/tables/etc to the table of contents
%toctotoc, % Uncomment to add the main table of contents to the table of contents
%parskip, % Uncomment to add space between paragraphs
%nohyperref, % Uncomment to not load the hyperref package
headsepline, % Uncomment to get a line under the header
%chapterinoneline, % Uncomment to place the chapter title next to the number on one line
%consistentlayout, % Uncomment to change the layout of the declaration, abstract and acknowledgements pages to match the default layout
table,
]{MastersDoctoralThesis} % The class file specifying the document structure

usepackage[utf8]{inputenc} % Required for inputting international characters
usepackage[T1]{fontenc} % Output font encoding for international characters

usepackage{amsmath} % Use the Palatino font by default

usepackage[table,xcdraw]{xcolor} % pas OK

usepackage{xcolor} %OK

usepackage{hyperref}

usepackage[bottom]{footmisc}

usepackage[backend=bibtex,style=authoryear,natbib=true]{biblatex} % Use the bibtex backend with the authoryear citation style (which resembles APA)

addbibresource{example.bib} % The filename of the bibliography

usepackage[autostyle=true]{csquotes} % Required to generate language-dependent quotes in the bibliography

usepackage{capt-of}

usepackage{subfigure}

usepackage{caption}

usepackage{float}

usepackage{graphicx}

usepackage{amssymb}

usepackage{amsfonts}

usepackage[framemethod=TikZ]{mdframed}
usepackage{lipsum}
mdfdefinestyle{MyFrame}{%
    linecolor=black,
    outerlinewidth=2pt,
    roundcorner=20pt,
    innertopmargin=baselineskip,
    innerbottommargin=baselineskip,
    innerrightmargin=20pt,
    innerleftmargin=20pt,
    backgroundcolor=gray!20!white}

% Please add the following required packages to your document preamble:
% usepackage[table,xcdraw]{xcolor}
% If you use beamer only pass "xcolor=table" option, i.e. documentclass[xcolor=table]{beamer}
begin{table}[]
begin{tabular}{|c|
>{columncolor[HTML]{FFFFFF}}c |
>{columncolor[HTML]{EFEFEF}}c |
>{columncolor[HTML]{FFFFFF}}c |
>{columncolor[HTML]{EFEFEF}}c |
>{columncolor[HTML]{FFFFFF}}c |
>{columncolor[HTML]{EFEFEF}}c |
>{columncolor[HTML]{FFFFFF}}c |}
hline
Row 1: & #1   & #2  & #3   & #4   & #5      & #6     & #7     \ hline
Row 2: & 12 % & 1 % & 15 % & 25 % & 18.75 % & 12.5 % & 6.25 % \ hline
end{tabular}
end{table}