效果

测试效果

源代码

先额外记一点存文本块的代码，基本可以原样展示命令

\begin{verbatim}
    \begin{document}
    
    \end{document}
\end{verbatim}

效果图的代码

\documentclass{article}
\usepackage{tikz}
\usepackage{xcolor}
\usepackage{environ}
\usepackage{amsthm}
\usepackage{amsmath,mathrsfs,amsfonts}
\usepackage{xparse}

\usepackage{tcolorbox}
\tcbuselibrary{skins, breakable, theorems}

\usetikzlibrary{shapes,decorations}
\definecolor{bule}{RGB}{18,29,57}
\definecolor{bablue}{RGB}{248,248,248}
\definecolor{main}{RGB}{127,191,51}
\definecolor{seco}{RGB}{0,145,215}
\definecolor{thid}{RGB}{180,27,131}


\newcommand{\newfancytheoremstyle}[5]{%
  \tikzset{#1/.style={draw=#3, fill=#2,very thick,rectangle,
      rounded corners, inner sep=10pt, inner ysep=20pt}}
  \tikzset{#1title/.style={fill=#3, text=#2}}
  \expandafter\def\csname #1headstyle\endcsname{#4}
  \expandafter\def\csname #1bodystyle\endcsname{#5}
}

\newfancytheoremstyle{fancythrm}{blue!10}{seco}{\bfseries\sffamily}{\sffamily}

\makeatletter
\DeclareDocumentCommand{\newfancytheorem}{ O{\@empty} m m m O{fancythrm} }{%
  % define the counter for the theorem
  \ifx#1\@empty
    \newcounter{#2}
  \else
    \newcounter{#2}[#1]
    \numberwithin{#2}{#1}
  \fi
  %% define the "newthem" environment
  \NewEnviron{#2}[1][{}]{%
    \noindent\centering
    \begin{tikzpicture}
      \node[#5] (box){
        \begin{minipage}{0.93\columnwidth}
          \csname #5bodystyle\endcsname \BODY~##1
        \end{minipage}};
      \node[#5title, right=10pt] at (box.north west){
        {\csname #5headstyle\endcsname #3 \stepcounter{#2}\csname the#2\endcsname\; ##1}};
      \node[#5title, rounded corners] at (box.east) {#4};
    \end{tikzpicture}
  }[\par\vspace{.5\baselineskip}]
}
\makeatother

 % Define new styles
 % \newfancytheoremstyle{<name>}{inner color}{outer color}{head style}{body style}
\newfancytheoremstyle{fancydef}{green!10}{green}{\itshape\sffamily}{\sffamily}

 % Define some new environments
 % \newfancytheorem[<number within>]{<name>}{<head>}{<symbol>}[<style>]
%\newfancytheorem[chapter]{newthem}{Theorem}{$\clubsuit$}
%\newfancytheorem[section]{newthem}{Theorem}{$\clubsuit$}
\newfancytheorem[section]{newthem}{dingli}{•}
\newfancytheorem[section]{newcor}{Corollary}{$\heartsuit$}

\newfancytheorem{newdef}{Definition}{$\spadesuit$}[fancydef]

%% 我自己尝试搞定理环境
\newtheorem{definition}{\textcolor{blue}{definition}}[section]
\renewcommand{\thedefinition}{\textcolor{red}{\thesection.\arabic{definition}}}
%\renewcommand{\thedefinition}{\textcolor{blue}{\thedefinition.\arabic{definition}}}
\newcommand{\newTheStyle}[1]{
\begin{tcolorbox}[colback=white!5!white,colframe=green!75!white]
\textbf{#1}
\end{tcolorbox}
}

\newenvironment{dingli}[1][\introductionname]{
  \begin{tcolorbox}[colback=white!5!white,colframe=green!75!white]
  \begin{definition}
  \bfseries
    %\textbf{#1}
    
    }
    {
    \end{definition}
  \end{tcolorbox}}


\begin{document}

\section{test}
\begin{newthem}
    test
\end{newthem}

\begin{newcor}
  test
\end{newcor}


\begin{newdef}
  test
\end{newdef}

\section{tcolorbox}
\begin{tcolorbox}[colback=white!5!white,colframe=green!75!white]
tcolorbox tcolorbox\\
tcolorbox
\end{tcolorbox}

\begin{tcolorbox}[colback=white!5!white,colframe=red!73!white]
tcolorbox tcolorbox\\
tcolorbox
\end{tcolorbox}

\section{newstyle}
\begin{newTheStyle}
555
\end{newTheStyle}

\begin{dingli}
testettt
\end{dingli}

\end{document}