how to add the page border for first two pages in latex?

Question

I'm beginner in latex. I'm trying crate a my internship report so i want to crate a page boarder for first two pages. i created the first page but at the second page is not getting boarders, it getting header and footers what i given. so please help me to put the boarder at second page also....

here what i have tried,

\documentclass[12pt]{book}
\usepackage{tikz}
\usetikzlibrary{calc}
\usetikzlibrary{decorations.pathmorphing}
\begin{document}

\pagenumbering{roman}
\begin{titlepage}

\begin{tikzpicture}[overlay,remember picture]
\draw [line width=3pt]
       ($ (current page.north west) + (1.5cm,-2.0cm) $)
    rectangle
    ($ (current page.south east) + (-1.5cm,1.8cm) $);
\draw [line width=1pt]
    ($ (current page.north west) + (1.65cm,-2.15cm) $)
    rectangle
    ($ (current page.south east) + (-1.65cm,1.95cm) $); 
\end{tikzpicture}

\section*{\large{DECLARATION}}

%-----some paragraph-------

\newpage

\begin{center}
\section*{\large{ACKNOWLEDGEMENT}}
\end{center}

%-----some paragraph-------
\end{titlepage}
\newpage

\tableofcontents
\newpage 

\pagenumbering{arabic}

%-----Start chapters-------
\end{document}

(in code I'm not mention the header and footers)

I searched lots but i got only how to add one page boarders so help me to put border for two pages also

Answer 1

Welcome! Here is one possible way using eso-pic.

\documentclass[12pt]{book}
\usepackage{tikz}
\usepackage{eso-pic}
\usetikzlibrary{calc}
\usetikzlibrary{decorations.pathmorphing}
\AddToShipoutPictureBG{\ifnum\value{page}<3% <- change this if you want more
% or less pages to have a frame
\begin{tikzpicture}[overlay,remember picture]
\draw [line width=3pt]
       ($ (current page.north west) + (1.5cm,-2.0cm) $)
    rectangle
    ($ (current page.south east) + (-1.5cm,1.8cm) $);
\draw [line width=1pt]
    ($ (current page.north west) + (1.65cm,-2.15cm) $)
    rectangle
    ($ (current page.south east) + (-1.65cm,1.95cm) $); 
\end{tikzpicture}%
\fi}
\begin{document}

\begin{titlepage}


\section*{DECLARATION}

%-----some paragraph-------

\newpage
\thispagestyle{empty}
\begin{center}
\large\bfseries ACKNOWLEDGEMENT
\end{center}

%-----some paragraph-------
\end{titlepage}
\newpage
\chapter{Some chapter}
%-----Start chapters-------
\end{document}

Answer 2

Here is what worked for me - it maybe useful for others. In a book type of document - I wanted first page to have border. Note the use of \AddToShipoutPictureBG* instead of \AddToShipoutPictureBG{}.

\begin{document}

\frontmatter
\begin{titlepage}
    \makeatletter
    \AddToShipoutPictureBG*{
        \begin{tikzpicture}[overlay,remember picture]
            \draw [line width=3pt]
            ($ (current page.north west) + (1.5cm,-2.0cm) $)
            rectangle
            ($ (current page.south east) + (-1.5cm,1.8cm) $);
            \draw [line width=1pt]
            ($ (current page.north west) + (1.65cm,-2.15cm) $)
            rectangle
            ($ (current page.south east) + (-1.65cm,1.95cm) $); 
        \end{tikzpicture}
    }
    \makeatother
    
    \input{./coverpage/coverpage-thesis}
\end{titlepage}