diff --git a/mod/survey/lib.php b/mod/survey/lib.php
index 36b618de866..38a6e7e4378 100644
--- a/mod/survey/lib.php
+++ b/mod/survey/lib.php
@@ -627,11 +627,11 @@ function survey_print_single($question) {
 
 
     if ($question->type == 0) {           // Plain text field
-        echo "<textarea rows=\"3\" cols=\"30\" name=\"q$question->id\" id=\"q$question->id\">$question->options</textarea>";
+        echo "<textarea rows=\"3\" cols=\"30\" class=\"form-control\" name=\"q$question->id\" id=\"q$question->id\">$question->options</textarea>";
 
     } else if ($question->type > 0) {     // Choose one of a number
         $strchoose = get_string("choose");
-        echo "<select name=\"q$question->id\" id=\"q$question->id\">";
+        echo "<select name=\"q$question->id\" id=\"q$question->id\" class=\"custom-select\">";
         echo "<option value=\"0\" selected=\"selected\">$strchoose...</option>";
         $options = explode( ",", $question->options);
         foreach ($options as $key => $val) {
diff --git a/mod/survey/report.php b/mod/survey/report.php
index 0ca661df5f5..7c147cd29e1 100644
--- a/mod/survey/report.php
+++ b/mod/survey/report.php
@@ -472,14 +472,14 @@
          echo "<form action=\"report.php\" method=\"post\">";
          echo "<h3>$strnotes:</h3>";
          echo "<blockquote>";
-         echo "<textarea name=\"notes\" rows=\"10\" cols=\"60\">";
+         echo "<textarea class=\"form-control\" name=\"notes\" rows=\"10\" cols=\"60\">";
          p($notes);
          echo "</textarea><br />";
          echo "<input type=\"hidden\" name=\"action\" value=\"student\" />";
          echo "<input type=\"hidden\" name=\"sesskey\" value=\"".sesskey()."\" />";
          echo "<input type=\"hidden\" name=\"student\" value=\"$student\" />";
          echo "<input type=\"hidden\" name=\"id\" value=\"$cm->id\" />";
-         echo "<input type=\"submit\" value=\"".get_string("savechanges")."\" />";
+         echo "<input type=\"submit\" class=\"btn btn-primary\" value=\"".get_string("savechanges")."\" />";
          echo "</blockquote>";
          echo "</form>";
          echo "</div>";
diff --git a/mod/survey/view.php b/mod/survey/view.php
index 2932fb5e971..7336415a789 100644
--- a/mod/survey/view.php
+++ b/mod/survey/view.php
@@ -191,7 +191,7 @@ $PAGE->requires->string_for_js('questionsnotanswered', 'survey');
 $PAGE->requires->js_init_call('M.mod_survey.init', $checkarray, true, $module);
 
 echo '<br />';
-echo '<input type="submit" value="'.get_string("clicktocontinue", "survey").'" />';
+echo '<input type="submit" class="btn btn-primary" value="'.get_string("clicktocontinue", "survey").'" />';
 echo '</div>';
 echo "</form>";
 
diff --git a/theme/boost/scss/moodle/modules.scss b/theme/boost/scss/moodle/modules.scss
index bc59ec39f4e..5d707a7874b 100644
--- a/theme/boost/scss/moodle/modules.scss
+++ b/theme/boost/scss/moodle/modules.scss
@@ -259,13 +259,6 @@ div#dock {
         }
     }
 
-    .resultgraph,
-    .reportsummary,
-    .studentreport,
-    .reportbuttons,
-    .centerpara {
-        text-align: center;
-    }
 }
 
 .nav .caret {