当将文章字体大小更改为 12pt 时，它会更改所有文本（包括 fancyhdr）的字体大小。我想将标题更改为大约 9pt 或 10pt，这样我的文档中就不会出现重叠的单词。
\documentclass[12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsthm}
\usepackage{amsfonts}
\usepackage{graphicx}
\usepackage{tikz}
\usepackage{fancyhdr}
\usepackage{extramarks}
\usepackage{enumitem}
\usepackage{mathrsfs}
\topmargin=-0.45in
\evensidemargin=0in
\oddsidemargin=0in
\textwidth=6.5in
\textheight=9.0in
\headsep=0.25in
\linespread{1.1}
\pagestyle{fancy}
\lhead{Name}
\chead{Math 310 Introduction to Mathematical Proofs\ (Professor Homework 4)}
\rhead{August 3}
\cfoot{\thepage}
\renewcommand\headrulewidth{0.4pt}
\renewcommand\footrulewidth{0.4pt}
\def\mathLarge#1{\mbox{\LARGE $#1$}}
\renewcommand{\qedsymbol}{$\blacksquare$}
\setlength\parindent{0pt}
\newcommand{\enterProblemHeader}[1]{
\nobreak\extramarks{}{Problem \arabic{#1} continued on next page\ldots}\nobreak{}
\nobreak\extramarks{Problem \arabic{#1} (continued)}{Problem \arabic{#1} continued on next page\ldots}\nobreak{}
}
\newcommand{\exitProblemHeader}[1]{
\nobreak\extramarks{Problem \arabic{#1} (continued)}{Problem \arabic{#1} continued on next page\ldots}\nobreak{}
\stepcounter{#1}
\nobreak\extramarks{Problem \arabic{#1}}{}\nobreak{}
}
\setcounter{secnumdepth}{0}
\newcounter{partCounter}
\newcounter{homeworkProblemCounter}
\setcounter{homeworkProblemCounter}{1}
\nobreak\extramarks{Problem \arabic{homeworkProblemCounter}}{}\nobreak{}
\newenvironment{homeworkProblem}[1][-1]{
\ifnum#1>0
\setcounter{homeworkProblemCounter}{#1}
\fi
\section{Problem \arabic{homeworkProblemCounter}}
\setcounter{partCounter}{1}
\enterProblemHeader{homeworkProblemCounter}
}{
\exitProblemHeader{homeworkProblemCounter}
}
\begin{document}
\end{document}
答案1
快速破解：
\pagestyle{fancy}
\lhead{\fontsize{9pt}{11pt}\selectfont Name}
\chead{\fontsize{9pt}{11pt}\selectfont Math 310 Introduction to Mathematical Proofs\ (Professor Homework 4)}
\rhead{\fontsize{9pt}{11pt}\selectfont August 3}
\cfoot{\thepage}