\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{kristin}
\pdfinfo{
  /Title (my-cheat-sheet.pdf)
  /Creator (Cheatography)
  /Author (kristin)
  /Subject (My 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}{1D37DE}
\definecolor{LightBackground}{HTML}{F0F2FC}
\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{My Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{kristin} via \textcolor{DarkBackground}{\uline{cheatography.com/22978/cs/10791/}}}
\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}kristin \\
  \uline{cheatography.com/kristin} \\
  \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 8th February, 2017.\\
   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*}{3}

\begin{tabularx}{5.377cm}{x{2.09034 cm} x{2.88666 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Abbreviations}}  \tn
% Row 0
\SetRowColor{LightBackground}
RS & Research \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
REF & Reference \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
I & Index \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
{\bf{≝}} & \&\#8797; `def+ tab` \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
{\bf{≞}} & \&\#8798; `mean+tab` \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
✘ & \&\#x2717; \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
≔ & \≔ \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
≚ & \≚ \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
⥱ `far+tab` & Fast arrow right \tn 
% Row Count 9 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.68758 cm} x{2.28942 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Sublime}}  \tn
% Row 0
\SetRowColor{LightBackground}
alt + m & Markdown Preview \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
ctrl+shift+p & Command Palette \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
ctrl + / & Comment \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
ctrl+shift+2 & Split Screen \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
ctrl+g & Go to Line \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
ctrl + enter & Insert line after \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
ctrl + shift + enter & Insert line before \tn 
% Row Count 8 (+ 2)
% Row 7
\SetRowColor{white}
ctrl + shift + ↑ /  ↓ & Swap line up/down \tn 
% Row Count 10 (+ 2)
% Row 8
\SetRowColor{LightBackground}
ctrl + k + u / i & Uppercase / Lowercase \tn 
% Row Count 12 (+ 2)
% Row 9
\SetRowColor{white}
ctrl + h & Replace \tn 
% Row Count 13 (+ 1)
% Row 10
\SetRowColor{LightBackground}
ctrl + d & Select Word \tn 
% Row Count 14 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.89126 cm} x{3.08574 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{PlainTask}}  \tn
% Row 0
\SetRowColor{LightBackground}
alt + i & new task \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
alt + d & completed \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
alt+shift+a & plain\_tasks\_archive \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\seqsplit{alt+shift+enter} & \seqsplit{plain\_tasks\_new\_with\_date} \tn 
% Row Count 5 (+ 2)
% Row 4
\SetRowColor{LightBackground}
c + tab & @critical \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
h + tab & @high \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
L + tab & @low \tn 
% Row Count 8 (+ 1)
% Row 7
\SetRowColor{white}
t + tab & @ today \tn 
% Row Count 9 (+ 1)
% Row 8
\SetRowColor{LightBackground}
s + tab tab & @started \tn 
% Row Count 10 (+ 1)
% Row 9
\SetRowColor{white}
d + tab ( +2\_ & due in two days \tn 
% Row Count 11 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.64241 cm} x{3.33459 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Shortcut Keys}}  \tn
% Row 0
\SetRowColor{LightBackground}
logt + tab & YYMMDD\_Time \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
nowt + tab & YYYYMMDD \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
tima + tab & HH:MM \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
def + tab & definition symbol \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
there4 + tab & ∴ \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
arro + tab & → \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
inc+ tab & ↑ \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
dec+ tab & ↓ \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
uatb + tab & up ⤒ to bar \tn 
% Row Count 9 (+ 1)
% Row 9
\SetRowColor{white}
datb + tab & down ⤓ to bar \tn 
% Row Count 10 (+ 1)
% Row 10
\SetRowColor{LightBackground}
ratb + tab & right ⇥ to bar \tn 
% Row Count 11 (+ 1)
% Row 11
\SetRowColor{white}
latb  + tab & left ⇤ to bar \tn 
% Row Count 12 (+ 1)
% Row 12
\SetRowColor{LightBackground}
rafb + tab & ↦ right arrow from bar \tn 
% Row Count 13 (+ 1)
% Row 13
\SetRowColor{white}
lafb + tab & ↤ left arrow from bar \tn 
% Row Count 14 (+ 1)
% Row 14
\SetRowColor{LightBackground}
uatb + tab & up ⤒ to bar \tn 
% Row Count 15 (+ 1)
% Row 15
\SetRowColor{white}
datb + tab & down ⤓ to bar \tn 
% Row Count 16 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}