diff --git a/assets/file_report.html.erb b/assets/file_report.html.erb
index b68f58b..7699488 100644
--- a/assets/file_report.html.erb
+++ b/assets/file_report.html.erb
@@ -2,6 +2,11 @@
   <head>
     <title>Coverage for <%= @source_file_name %></title>
 <style>
+body {
+  margin-left: 0px;
+  margin-right: 0px;
+  padding: 0px;
+}
 h2 {
   text-align: center;
 }
@@ -17,6 +22,7 @@ h2 {
 }
 #code_table {
   border-collapse: collapse;
+  width: 100%;
 }
 #code_table th, #code_table td {
   margin: 0px;
