\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{LordHap}
\pdfinfo{
  /Title (kotlin-fundamentals.pdf)
  /Creator (Cheatography)
  /Author (LordHap)
  /Subject (Kotlin Fundamentals Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{766DB2}
\definecolor{LightBackground}{HTML}{F6F5FA}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Kotlin Fundamentals Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{LordHap} via \textcolor{DarkBackground}{\uline{cheatography.com/146622/cs/31748/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}LordHap \\
  \uline{cheatography.com/lordhap} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 18th April, 2022.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{4}

\begin{tabularx}{3.833cm}{x{1.30454 cm} x{2.12846 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Variables}}  \tn
% Row 0
\SetRowColor{LightBackground}
val & Immuable variable \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
var & Muable variable \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\$\{variable\} & Calling a variable \tn 
% Row Count 3 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{p{0.36396 cm} x{1.5165 cm} x{1.15254 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{3.833cm}}{\bf\textcolor{white}{Output and Input}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{print()} & Print on the line & `print("Hello World !")` \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\seqsplit{println()} & Print on the line and go back to the line & \seqsplit{`println("Hello} World !")` \tn 
% Row Count 5 (+ 3)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{readLine()} & Function to read the enter of the user & `var hello: String = readLine() \tn 
% Row Count 8 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{p{0.6866 cm} x{2.7464 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Functions}}  \tn
% Row 0
\SetRowColor{LightBackground}
fun & Keyword for initializing a function \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
hello & Name of the function \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
() & Parameters (variables) \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
\{ \} & Content of the function \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
return & Return the value of the function (not required) \tn 
% Row Count 7 (+ 2)
% Row 5
\SetRowColor{white}
\seqsplit{function()} & call the function \tn 
% Row Count 9 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{3.833cm}}{`fun hello () \{` \newline `println("hello world")` \newline `\}`}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{p{0.75825 cm} x{1.09188 cm} x{1.18287 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{3.833cm}}{\bf\textcolor{white}{Data Types}}  \tn
% Row 0
\SetRowColor{LightBackground}
var foo: String = "hello" & Variable with data type specification &  \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
: Int & Int (Integer) & -32 768 to 32 767 \tn 
% Row Count 5 (+ 2)
% Row 2
\SetRowColor{LightBackground}
: Byte & Byte (Integer) & -128 to 127 \tn 
% Row Count 6 (+ 1)
% Row 3
\SetRowColor{white}
: Short & Short (Integer) & -32 768 to 32 767 \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
: Long & Long & \seqsplit{-9223372036854775808} to \seqsplit{9223372036854775808} \tn 
% Row Count 11 (+ 3)
% Row 5
\SetRowColor{white}
: Double & Double & 1.7e−308 to 1.7e+038 \tn 
% Row Count 13 (+ 2)
% Row 6
\SetRowColor{LightBackground}
: Char & Character & / \tn 
% Row Count 14 (+ 1)
% Row 7
\SetRowColor{white}
: Boolean & Boolean & `true` or `false` \tn 
% Row Count 16 (+ 2)
% Row 8
\SetRowColor{LightBackground}
: String & String & / \tn 
% Row Count 17 (+ 1)
% Row 9
\SetRowColor{white}
: Float & Float & 3.4e−038 to 3.4e+038 \tn 
% Row Count 19 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{3.833cm}}{{\emph{In Kotlin, variables can detect automatically the data type of the value in the variable but if you want to specify a data type (i.g. editing the variable) }} \newline  \newline For the float you should add a `F` behind the value of the float variable}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}