diff --git a/ctufit-thesis.cls b/ctufit-thesis.cls
index a56c5b2ef09b4810a7c1d7e7518f44d69cdd6a85..6e1690cd53ef837088117bf66d929660413bd2c1 100644
--- a/ctufit-thesis.cls
+++ b/ctufit-thesis.cls
@@ -210,7 +210,6 @@
   \kern0.05em{\color{decoration}\rule{0.73em}{0.73em}}%
   \hspace*{0.67em}\bothIfFirst{#1}{~}#2}
 \captionsetup{labelformat=boxed}
-\captionsetup[table]{position=top}
 % captions settings end
 
 % lists settings
@@ -231,13 +230,13 @@
 % \makeatletter
 \renewcommand\labelitemi{%
   \textcolor{enumgray}{\ifnum\@listdepth=\@ne
-                                  \rule{0.67em}{0.33em}%
+                                  \rule[0.3ex]{0.67em}{0.33em}%
                                 \else
-                                  \rule{0.45em}{0.225em}%
+                                  \rule[0.4ex]{0.45em}{0.225em}%
                                 \fi}}
 % \makeatother
 \renewcommand\labelitemii{%
-  \textcolor{enumgray}{\rule{0.45em}{0.225em}}}
+  \textcolor{enumgray}{\rule[0.4ex]{0.45em}{0.225em}}}
 \renewcommand\labelitemiii{%
   \textcolor{enumgray}{\bfseries\textasteriskcentered}}
 \renewcommand\labelitemiv{%
diff --git a/ctufit-thesis.tex b/ctufit-thesis.tex
index 626f4676e7d63cbbbadcec32bacc08a0a93ba064..871e5a76a74b18d7a726bd812e740067b908698b 100644
--- a/ctufit-thesis.tex
+++ b/ctufit-thesis.tex
@@ -95,6 +95,7 @@
 \usepackage{lipsum,tikz}
 \usepackage[style=iso-numeric]{biblatex}
 \addbibresource{text/bib-database.bib}
+\usepackage{xurl}
 \usepackage{listings} % typesetting of sources
 %\usepackage{minted}
 \usepackage{csquotes}
diff --git a/text/bib-database.bib b/text/bib-database.bib
index 8f170321a99f4f42e83dc69e2d866edb1cbf27be..7a3b997ecd0a0cf497d2e49b6d0ee3f7877a7a89 100644
--- a/text/bib-database.bib
+++ b/text/bib-database.bib
@@ -451,7 +451,6 @@ pages={58-64},
   publisher={IBM}
 }
 
-% Following reference will overflow page, because the link cannot be broken into lines automatically. We can include package xurl (\usepackage{xurl}), which will break the line where it is needed.
 @misc{test,
     author = {{Joe Black}},
     title = {Foobar 1.0},