auto linebreak in table with background color

I’m trying to limit my tables size and force line skip. Instead, the text reaches the end of the paper, at the same time I want it to have a grey background in one of the cells. I understand that the macro makegapedcells in makecell will remove this function. But what do i use instead?

And as you see i cant even get makegapedcells to make the line shift now… But I’m sure there must be a better way?

documentclass[a4paper, 11pt]{scrartcl}
usepackage{comment} % enables the use of multi-line comments (ifx fi) 
usepackage{fullpage} % changes the margin
usepackage[swedish]{babel}
usepackage[utf8]{inputenc}
usepackage{graphicx}
usepackage{multicol}
usepackage{xcolor}
usepackage{framed}
usepackage{float}
usepackage{fancyhdr}
usepackage{enumitem}
pagestyle{fancy} 
usepackage{pdfpages}
usepackage{multicol}
usepackage{lipsum}
usepackage{pgfkeys}
usepackage{titlesec} 
usepackage{fourier, erewhon}
usepackage{geometry} 
usepackage{array, makecell}
usepackage{colortbl}
usepackage{geometry}

setlength{footskip}{0.1pt}
setlength{headheight}{80pt}
setlength{topmargin}{0pt}
setlengthparindent{0pt}

author{Peter Molander}
usepackage{makecell}
usepackage{multirow}

setcellgapes{1pt}%parameter for the spacing


%%%%%%%%%%%%% Add style 2 if u want diffrent headings %%%%%%%%%%%%%%%%%
fancypagestyle{style1}{
lhead{includegraphics[width=7cm]{ntk_logga.jpg}}
rhead{Föredragningslista
Bilaga textit{fumF{yearnr}-{FUM}.7}
today}
renewcommand{headrulewidth}{0pt}
cfoot{
makebox{}
makebox{}
makebox[0.1linewidth]{rule{0.1linewidth}{0.1pt}} hspace{1cm} makebox[0.1linewidth]{rule{0.1linewidth}{0.1pt}} hspace{1cm} makebox[0.1linewidth]{rule{0.1linewidth}{0.1pt}} hspace{1cm} makebox[0.1linewidth]{rule{0.1linewidth}{0.1pt}} hspace{1cm}}
}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%% Change font size on section and sub section %%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%% And change the background color  %%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

setkomafont{section}{mysection}
newcommand{mysection}[1]{%
    mediumsfbf%
    setlength{fboxsep}{0cm}%already boxed
    colorbox{black!80}{%
        begin{minipage}{linewidth}%
            vspace*{2pt}%Space before
            #1
            vspace*{2pt}%Space after
        end{minipage}%
    }}

titleformat{subsection}[runin]
  {normalfontlargebfseries}{thesubsection}{1em}{}
titleformat{subsubsection}[runin]
  {normalfontnormalsizebfseries}{thesubsubsection}{1em}{}
titlespacing*{subsection}{0pt}{0.5em}{1em}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%   Insert the FUM nr your on 1-8 + Year %%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
newcommandFUM{1} 
newcommandyearnr{19}

newcommand{setvalue}[1]{pgfkeys{/variables/#1}}
newcommand{getvalue}[1]{pgfkeysvalueof{/variables/#1}}
newcommand{declare}[1]{%
 pgfkeys{
  /variables/#1.is family,
  /variables/#1.unknown/.style = {pgfkeyscurrentpath/pgfkeyscurrentname/.initial = ##1}
 }%
}

declare{}

begin{document}
pagestyle{style1}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%      Pre-info        %%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
textbf{Large Fullmäktigesammanträde {FUM}}\
textbf{Datum:} 20{yearnr}-xx-xx
textbf{Tid:} 17:15
textbf{Plats:} Origo

%textbf{Bilagor:} Bilaga 1 - Dagordning %Skall alltid bifogas som bilaga
%Bilaga 2 - Motioner, revisionberättelser etc %Se stadgarna för aktuella bilagor





%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%      Formalia        %%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%% Set Varible1 to the wanted sections start letter %%%%%%
 setvalue{VARIABLE1 = F}

noindenttextsc{section*{begin{tabular}{c|c}
    color{white}{getvalue{VARIABLE1}{yearnr}-{FUM}} 
    & color{white}{Formalia} 
    %& color{white}{Anmärkningar}
end{tabular}}}

%%%% .1 %%%%
 makegapedcells
subsection*{small getvalue{VARIABLE1}{yearnr}-{FUM}.1}
    begin{tabular}[t]{l|p{15mm}} 
        small Mötets Öppnande 
        &  colorbox{black!30}{scriptsize long longlonglonglonglonglong}
    end{tabular}
%%%% .2 %%%%
makegapedcells
subsection*{small getvalue{VARIABLE1}{yearnr}-{FUM}.2} 
    begin{tabular}[t]{l|p{15mm}}  
        small Avstängning av mobiltelefoner 
        &  longlonglonglonglonglonglongllonglonglonglonglong
    end{tabular}



    end{document}