diff --git a/css/jspsych.css b/css/jspsych.css
index 769c9e6..9821a81 100644
--- a/css/jspsych.css
+++ b/css/jspsych.css
@@ -9,16 +9,14 @@
 /* fonts and type */
 
 @import url(https://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700);
-html {
+#jspsych_experiment {
   font-family: 'Open Sans', 'Arial', sans-serif;
   font-size: 18px;
   line-height: 1.6em;
-}
-body {
   margin: 0;
   padding: 0;
 }
-p {
+#jspsych_experiment p {
   clear: both;
 }
 .very-small {
@@ -52,7 +50,7 @@ p {
 }
 /* Form elements like input fields and buttons */
 
-input[type="text"] {
+#jspsych_experiment input[type="text"] {
   font-family: 'Open Sans', 'Arial', sans-sefif;
   font-size: 14px;
 }
diff --git a/css/pcllab.css b/css/pcllab.css
index 146da7e..8af0a4e 100644
--- a/css/pcllab.css
+++ b/css/pcllab.css
@@ -14,7 +14,7 @@
   border: 1px solid rgba(0,0,0,0.3);
 }
 
-html {
+#jspsych_container {
   background: #bbb;
 }
 
diff --git a/css/pcllab_school.css b/css/pcllab_school.css
index 020f1dc..6b5890c 100644
--- a/css/pcllab_school.css
+++ b/css/pcllab_school.css
@@ -14,10 +14,6 @@
   border: 1px solid rgba(0,0,0,0.3);
 }
 
-html {
-  background: #bbb;
-}
-
 .jspsych-display-element {
   width: 800px;
   margin: 20px auto 20px auto;
@@ -57,7 +53,7 @@ html {
   color: #338FD8;
 }
 /* School specific CSS */
-html {
+#jspsych_experiment {
     background: #0073CF;
     color: white;
 }