LaTeX Templates Bìa sách tuyệt đẹp 2

\documentclass[a4paper]{book}
\usepackage[utf8]{vietnam}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{tikz}
\usetikzlibrary{calc}
\usepackage[outline]{contour}
\definecolor{TOP}{RGB}{254, 0, 2}
\definecolor{BLUE}{RGB}{0, 0, 254}
\definecolor{RED}{RGB}{73, 190, 188}
\definecolor{GRAY}{RGB}{169, 169, 169}

\begin{document}
\thispagestyle{empty}
\def\cao{29.7}
\def\rong{21}
\begin{tikzpicture}[remember picture, overlay]
\fill[TOP] (current page.north west)coordinate(A)
--($(current page.north west)+(0,{-0.5*\cao})$)coordinate(B)
--($(current page.north east)+({-1/4*\cao},{-1/8*\rong})$) coordinate(C)
--($(current page.north west)+({1/3*\rong},0)$) coordinate(D)


--cycle;

\fill[BLUE] (C)
--(D)
--($(current page.north east)+({-1/4*\cao},0)$) 


--cycle;
\path ($(B)+(0,1)$) coordinate (B1) 
($(B)+(0,-1.5)$) coordinate (B2);
\fill [right color=RED, left color=TOP!80](B)--(C)--(B1)--cycle;
\fill [right color=GRAY, left color=white!80](B2)--(C)--(B)--cycle;


\end{tikzpicture}

\def\caoo{1.5}
\begin{tikzpicture}[remember picture, overlay]
\fill[TOP] (current page.south west)coordinate(E)
--($(current page.south west)+(0,\caoo)$)coordinate(F)
--($(current page.south west)+({1/2*\rong},\caoo)$) coordinate(G)
--($(current page.south west)+({1/2*\rong},{5.56+\caoo})$) coordinate(H)
--($(current page.south east)+(1.5,{4/9*\cao})$) coordinate(K)
--(current page.south east) coordinate(L)


--cycle;
\path ($(K)+(0,0.8)$) coordinate (K1) 
($(K)+(0,-0.8)$) coordinate (K2);
\fill[BLUE] ($(current page.south west)+(\caoo,0)$)coordinate(M)--(G)--(K)--(L)--cycle;
\fill [left color=GRAY, right color=white](H)--(K1)--(K)--cycle;
\fill [left color=RED, right color=TOP](H)--(K2)--(K)--cycle;


\end{tikzpicture}


\begin{tikzpicture}[remember picture, overlay]
\node at ($(current page.center)+(-8,13)$)[right]{\bfseries\color{white}\fontfamily{qag}\fontsize{19pt}{32}\selectfont NGUYỄN THÀNH TRƯƠNG};
\node[color=red,shape=rectangle,draw] at ($(current page.center)+(-4,4)$)[right]{\bfseries\color{black}\fontfamily{qag}\fontsize{30pt}{32}\selectfont ĐỀ VÀ LỜI GIẢI CHI TIẾT};
\contourlength{0.5mm}
\node at ($(current page.center)+(-3.8,1)$)[right]{\contour{green}{\bfseries\color{TOP}\fontfamily{qag}\fontsize{60pt}{42pt}\selectfont MÔN TOÁN}};
\node at ($(current page.center)+(-8,-3)$)[right]{\bfseries\color{cyan}\fontfamily{qcs}\fontsize{35pt}{40}\selectfont KỲ THI THPT QG};
%\node at ($(current page.center)+(5,-3)$)[right,yscale=2,xscale=1.5]{\bfseries\color{TOP}\fontfamily{qag}\fontsize{40pt}{31}\selectfont 20};
\contourlength{0.5mm}
\node at ($(current page.center)+(4,-2.9)$)[right,yscale=2,xscale=1.5] {
    \contour{cyan}{\bfseries\color{white}\fontfamily{qag}\fontsize{50pt}{30pt}\selectfont 2020}};
\end{tikzpicture}
\end{document}