一个章节样式的定制代码

代码如下

\documentclass[12pt,a4paper]{book}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{microtype}

\usepackage[svgnames, x11names]{xcolor}
\newcommand*\ftsize[1]{\fontsize{#1pt}{\numexpr 1.2*#1\relax pt}\selectfont}
\newcommand*\chapsubtitle[1]{{\LARGE #1}}
\newcommand\maketabular[1]{\begin{tabular}[b]{l}
  #1
\end{tabular}}
\usepackage{colortbl}
\usepackage{titlesec}
\titleformat{\chapter}[block]{\usefont{T1}{phv}{m}{n}}{%
\begin{tabular}[b]{c !{\color{lightgray}\vline width1.2pt}}{\large\color{lightgray} \textls*{CHAPTER}}\\[4ex] \fontsize{72}{72}\selectfont\thechapter\end{tabular}}{1em}{\bfseries\fontsize{36}{48}\selectfont\maketabular}%[]

\begin{document}
\setcounter{chapter}{12}
\chapter{Hello,  ATL Server\\ \chapsubtitle{A Modern C++ Web Platform}}%

\end{document}

选自：http://tex.stackexchange.com/questions/163052/customizing-chapters-title