我想创建一个中心有色 parbox，但尽管我使用包定义了边界几何学，parbox 左侧边距比右侧边距大。
感谢帮助
\documentclass[a4paper,10pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{color}
\usepackage[a4paper,top=1cm,left=2cm,right=2cm]{geometry}
\usepackage{graphicx}
\begin{document}
\definecolor{Blau1}{RGB}{0,97,175}
\definecolor{Blau2}{RGB}{86,189,218}
\definecolor{Blau3}{RGB}{212,239,252} % Define a custom color for the heading box
\colorbox{Blau3}{ % Creates a highlight behind the text using the previously-defined navy color
\parbox[t]{\linewidth}{ % Creates a box to take up the entire line width
\centering
\vspace*{14pt} % Whitespace above the text
\color{Blau1} \center{\textbf{\Large REPORT}} % Right-aligned heading text
\vspace*{14pt} % Whitespace below the text
}}
\end{document}
答案1
您需要删除颜色框前的缩进和框的自然填充（也许它以另一种方式调用，我不确定）。对于后者，我使用了包calc并将 parbox 的长度设置为\textwidth-2\fboxsep，因此textwidth减去自然填充。
\documentclass[a4paper,10pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{color}
\usepackage[a4paper,top=1cm,left=2cm,right=2cm]{geometry}
\usepackage{graphicx}
\usepackage{showframe}
\usepackage{calc}
\begin{document}
\definecolor{Blau1}{RGB}{0,97,175}
\definecolor{Blau2}{RGB}{86,189,218}
\definecolor{Blau3}{RGB}{212,239,252}
\noindent\colorbox{Blau3}{% new code here
\parbox[t]{\textwidth-2\fboxsep}{% new code here
\centering
\vspace*{14pt}
\color{Blau1} \center{\textbf{\Large REPORT}}
\vspace*{14pt}
}}
\end{document}
