This code for Notepad in post - \documentclass{beamer} or standalone: poster-layout: background and boxes
now i want to change to \documentclass{article} and can resize dimension of box (width, height): set specific width, height (cm)
Minimal code from this above link
\documentclass{article}
\usepackage[a5paper,landscape,left=1.5cm,right=0.3cm,top=0.5cm,bottom=0.5cm]{geometry}
\usepackage{tikz}
\usetikzlibrary{shadows,shapes.geometric}
\usepackage{lipsum}
\usepackage[pages=some]{background}
\backgroundsetup{
scale=1,
color=black,
opacity=0.4,
angle=0,
contents={%
\includegraphics[width=\paperwidth,height=\paperheight]{example-image}
}%
}
\definecolor{mybrown}{RGB}{33,34,28}
\definecolor{myyellow}{RGB}{242,226,149}
\definecolor{mygreen}{RGB}{176,232,145}
\definecolor{myblue}{RGB}{61,139,189}
\definecolor{myorange}{RGB}{245,156,74}
\definecolor{mypurple}{RGB}{230,111,148}
\definecolor{myred}{RGB}{215,80,50}
\newcommand\NotePad[3][100]{%
\begin{tikzpicture}
\fill[#2,drop shadow]
(0,0) {[rounded corners=1.5cm]--
++(10,0)} --
++(0,10) --
++(-10,0) --
cycle;
\fill[#2!80!black]
(9,0) to[out=30,in=-70]
(9.35,0.75) to[out=-30,in=210]
(10,1) to[out=240,in=30]
(9,0);
\fill[mybrown]
(5,9.5) circle [radius=0.25cm];
\fill[mybrown!40]
(5,9.5) circle [radius=0.20cm];
\node[
cylinder,
fill=mybrown,
rotate=#1,
minimum width=10pt,
minimum height=18pt
]
at (5,9.52) {};
\node[text width=9cm,minimum height=8cm] at (5,5)
{#3};
\end{tikzpicture}%
}
\begin{document}
\NotePad{myyellow}{111Some test text}\quad
\NotePad[90]{mygreen}{Some test text}\quad
\NotePad[68]{myblue}{Some test text}\par\bigskip
\end{document}
Thank in advance

\tikz[overlay,remember picture[{\node[notepad,notepad/color=myyellow] at (current page.center) {111Some test text};}if that's what you mean. Note that I didn't read the original post.... now I did. Why are you not using thetcolorboxversion. This seems to be much better than the plain TikZ version, and allows you to adjust the width and so on.) – Mar 26 '19 at 00:10