diff --git a/config/template.tex b/config/template.tex
index a3727f5..5c37846 100644
--- a/config/template.tex
+++ b/config/template.tex
@@ -20,3 +20,17 @@
 
 % Headers
 \usepackage{emptypage} % Remove headers and footers on empty pages
+\usepackage{etoolbox} % Patching commands
+\usepackage{fancyhdr} % Headers and footers
+
+\pagestyle{fancy} % Use fancy headers and footers
+\fancyhf{} % Clear headers and footers
+\fancyhead[LO, RE]{\small\leftmark} % Chapter in the left on odd pages and right on even pages
+\fancyfoot[C]{\thepage} % Page number in the center
+
+\appto\mainmatter{
+    \renewcommand{\sectionmark}[1]{\markright{\thesection.\ #1}}
+    \renewcommand{\chaptermark}[1]{\markboth{\chaptername~\thechapter~--\ #1}{}}
+    \fancyhead[RE]{\small\rightmark}
+    \fancyhead[LO]{\small\leftmark}
+}
diff --git a/main.tex b/main.tex
index 14f031c..4570644 100644
--- a/main.tex
+++ b/main.tex
@@ -1,3 +1,9 @@
+% Set PDF version to 1.7 (https://tex.stackexchange.com/a/638196)
+\ExplSyntaxOn
+\sys_ensure_backend:
+\pdf_version_gset:n{1.7}
+\ExplSyntaxOff
+
 % Template
 \documentclass[twoside, a4paper, 12pt]{book}
 \input{config/template}