tikz：内部分隔符仅在一个维度/边框中

Question

我正在寻找一种方法来仅为一个边框增加 tikz 对象的分隔符。

仅应用一个小的“inner sep”值和/或没有“inner ysep”，标题对象就会融入文本中

如果我增加“内部 ysep”，它看起来会更好，但对于北部和南部边界是对称的

实际上，我只想控制北部边界分隔线。也许有人能给我一个主意？

欢呼并感谢，托马斯

\documentclass{article}
\usepackage[latin1]{inputenc}
\usepackage[english,ngerman]{babel}
\usepackage{xcolor}
\usepackage[framemethod=tikz]{mdframed}
\usepackage{tabularx,booktabs} 
\usepackage{wrapfig}
\usepackage{amssymb,amsmath}
\usepackage{tikz}
\usetikzlibrary{backgrounds}
\newcolumntype{Y}{>{\centering\arraybackslash}X}    
\usetikzlibrary{positioning} 
\usetikzlibrary{calc}
\usepackage{lipsum}
\begin{document}
\large
\begin{tikzpicture}
\tikzstyle{headerbox} = [ultra thick,draw=green,rounded corners=15pt,inner sep=10pt, inner ysep=20pt]
\tikzstyle{headerstyle} = [fill=yellow,rounded corners=5pt]
  \node[headerbox] (abstract1) {
    \begin{minipage}[H]{0.98\textwidth}
      \lipsum[2]
    \end{minipage}
  };
  \node[headerstyle] at (abstract1.north){\LARGE Abstract};
\end{tikzpicture}
\end{document}

Answer 1

只需在开始时添加一条规则。

\documentclass{article}
\usepackage{tikz}
\usepackage{lipsum}
\begin{document}
\tikzset{headerbox/.style = {ultra thick,draw=green,rounded corners=15pt,inner sep=10pt,
                            text width=0.98\textwidth,align=justify},
        headerstyle/.style = {fill=yellow,rounded corners=5pt}
   }
\large
\begin{tikzpicture}
  \node[headerbox] (abstract1) {
      \rule{0pt}{3ex}\lipsum[2]
  };
  \node[headerstyle] at (abstract1.north){\LARGE Abstract};
\end{tikzpicture}
\end{document}

和tcolorbox

\documentclass{article}
\usepackage[many]{tcolorbox}
\usepackage{lipsum}
\begin{document}
  \begin{tcolorbox}[enhanced,colback=white,boxsep=10pt,top=20pt,boxrule=1.5pt,colframe=green,
   title=Abstract,fontupper=\large,fonttitle=\LARGE,coltitle=black,arc=15pt,
    attach boxed title to top center=
     {yshift=-\tcboxedtitleheight/2},
      boxed title style={colback=yellow,colframe=yellow}]
\lipsum[2]
\end{tcolorbox}
\end{document}