diff --git a/gtsam/discrete/DecisionTreeFactor.cpp b/gtsam/discrete/DecisionTreeFactor.cpp
index e9c393c7d..3f40ddf3b 100644
--- a/gtsam/discrete/DecisionTreeFactor.cpp
+++ b/gtsam/discrete/DecisionTreeFactor.cpp
@@ -222,29 +222,13 @@ namespace gtsam {
   /* ************************************************************************ */
   string DecisionTreeFactor::html(const KeyFormatter& keyFormatter,
                                   const Names& names) const {
-    const string style =
-        "<style scoped=\'\'>\n"
-        "    .dataframe tbody tr th:only-of-type {\n"
-        "        vertical-align: middle;\n"
-        "    }\n"
-        "    .dataframe tbody tr th {\n"
-        "        vertical-align: top;\n"
-        "    }\n"
-        "    .dataframe thead th {\n"
-        "        text-align: right;\n"
-        "    }\n"
-        "</style>\n";
-
     stringstream ss;
 
     // Print out preamble.
-    ss << "<div>\n"
-       << style
-       << "<table border=\'1\' class=\'dataframe\'>\n"
-          "  <thead>\n";
+    ss << "<div>\n<table class=\'DecisionTreeFactor\'>\n  <thead>\n";
 
     // Print out header row.
-    ss << "    <tr style=\'text-align: right;\'>";
+    ss << "    <tr>";
     for (auto& key : keys()) {
       ss << "<th>" << keyFormatter(key) << "</th>";
     }
diff --git a/gtsam/discrete/tests/testDecisionTreeFactor.cpp b/gtsam/discrete/tests/testDecisionTreeFactor.cpp
index c9f692497..594134edf 100644
--- a/gtsam/discrete/tests/testDecisionTreeFactor.cpp
+++ b/gtsam/discrete/tests/testDecisionTreeFactor.cpp
@@ -161,21 +161,9 @@ TEST(DecisionTreeFactor, htmlWithValueFormatter) {
   DecisionTreeFactor f(A & B, "1 2  3 4  5 6");
   string expected =
       "<div>\n"
-      "<style scoped=''>\n"
-      "    .dataframe tbody tr th:only-of-type {\n"
-      "        vertical-align: middle;\n"
-      "    }\n"
-      "    .dataframe tbody tr th {\n"
-      "        vertical-align: top;\n"
-      "    }\n"
-      "    .dataframe thead th {\n"
-      "        text-align: right;\n"
-      "    }\n"
-      "</style>\n"
-      "<table border='1' class='dataframe'>\n"
+      "<table class='DecisionTreeFactor'>\n"
       "  <thead>\n"
-      "    <tr style='text-align: "
-      "right;'><th>A</th><th>B</th><th>value</th></tr>\n"
+      "    <tr><th>A</th><th>B</th><th>value</th></tr>\n"
       "  </thead>\n"
       "  <tbody>\n"
       "    <tr><th>Zero</th><th>-</th><td>1</td></tr>\n"
@@ -191,11 +179,6 @@ TEST(DecisionTreeFactor, htmlWithValueFormatter) {
   DecisionTreeFactor::Names names{{12, {"Zero", "One", "Two"}},
                                   {5, {"-", "+"}}};
   string actual = f.html(keyFormatter, names);
-  cout << expected << endl;
-  cout << actual << endl;
-  ofstream ef("expected=html.txt"), af("actual-html.txt");
-  ef << expected << endl;
-  af << actual << endl;
   EXPECT(actual == expected);
 }