\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{restran}
\pdfinfo{
  /Title (reactjs.pdf)
  /Creator (Cheatography)
  /Author (restran)
  /Subject (REACTJS 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}{47A32A}
\definecolor{LightBackground}{HTML}{F3F9F1}
\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{REACTJS Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{restran} via \textcolor{DarkBackground}{\uline{cheatography.com/64008/cs/16540/}}}
\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}restran \\
  \uline{cheatography.com/restran} \\
  \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 1st August, 2018.\\
   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}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Components}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`import React from 'react'` \newline % Row Count 1 (+ 1)
`import ReactDOM from 'react-dom'` \newline % Row Count 2 (+ 1)
`class Hello extends React.Component \{` \newline % Row Count 3 (+ 1)
  `render () \{` \newline % Row Count 4 (+ 1)
    `return \textless{}div className='message-box'\textgreater{}` \newline % Row Count 5 (+ 1)
      `Hello \{this.props.name\}` \newline % Row Count 6 (+ 1)
    `\textless{}/div\textgreater{}` \newline % Row Count 7 (+ 1)
  `\}` \newline % Row Count 8 (+ 1)
`\}` \newline % Row Count 9 (+ 1)
`const el = document.body` \newline % Row Count 10 (+ 1)
`ReactDOM.render(\textless{}Hello name='John' /\textgreater{}, el)` \newline % Row Count 11 (+ 1)
`Use the React.js jsfiddle to start hacking. (or the unofficial jsbin)`% Row Count 13 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Properties}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{`\textless{}Video fullscreen=\{true\} /\textgreater{}` \newline % Row Count 1 (+ 1)
`render () \{` \newline % Row Count 2 (+ 1)
`  this.props.fullscreen` \newline % Row Count 3 (+ 1)
`  ···` \newline % Row Count 4 (+ 1)
`\}` \newline % Row Count 5 (+ 1)
`Use this.props to access properties passed to the component.` \newline % Row Count 7 (+ 2)
`See: Properties`% Row Count 8 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Nesting}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{`class Info extends React.Component \{` \newline  ` render () \{` \newline  `   const \{ avatar, username \} = this.props` \newline  \newline   ` return \textless{}div\textgreater{}` \newline  `     \textless{}UserAvatar src=\{avatar\} /\textgreater{}` \newline `      \textless{}UserProfile username=\{username\} /\textgreater{}` \newline `   \textless{}/div\textgreater{}` \newline `  \}` \newline `\}`} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{As of React v16.2.0, fragments can be used to return multiple children without adding extra wrapping nodes to the DOM.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{States}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{constructor(props) \{ \newline   super(props) \newline   this.state = \{\} \newline \} \newline  \newline this.setState(\{ username: 'rstacruz' \}) \newline render () \{ \newline   this.state.username \newline   ··· \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Use states (this.state) to manage dynamic data. \newline  \newline See: States}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Children}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{\textless{}AlertBox\textgreater{} \newline   \textless{}h1\textgreater{}You have pending notifications\textless{}/h1\textgreater{} \newline \textless{}/AlertBox\textgreater{} \newline   \newline class AlertBox extends React.Component \{ \newline   render () \{ \newline     return \textless{}div className='alert-box'\textgreater{} \newline       \{this.props.children\} \newline     \textless{}/div\textgreater{} \newline   \} \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Children are passed as the children property.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}