diff --git a/src/index.html b/src/index.html
index b5d4bc2..6f50e29 100644
--- a/src/index.html
+++ b/src/index.html
@@ -91,10 +91,11 @@
 			display: flex;
 			flex-direction: column;
 			will-change: -webkit-filter;
-			transition: 0.15s ease 0.4s;
+			transition: 0.15s ease 0.2s;
 		}
 		.overlay-visible .main-container {
-			transition-duration: 0.3s;
+			transition-duration: 0.5s;
+			transition-delay: 0.4s;
 			-webkit-filter: blur(3px);
 		}
 		.code-side,
@@ -170,8 +171,12 @@
 			writing-mode: vertical-lr;
 			padding: 10px 5px;
 		}
+		.code-wrap__header .caret {
+			transition: 0.2s ease;
+		}
 		.is-minimized .code-wrap__header .caret {
-			display: none;
+			opacity: 0;
+			transform: translateY(10px);
 		}
 		.code-wrap__header-btn {
 			width: 18px;
@@ -758,7 +763,7 @@
 				<textarea id="js-external-js" class="full-width" id="" cols="30" rows="5" placeholder="Put each library in new line"></textarea>
 
 				<h3>CSS</h3>
-				<textarea id="js-external-css" class="full-width" id="" cols="30" rows="5"></textarea>
+				<textarea id="js-external-css" class="full-width" id="" cols="30" rows="5" placeholder="Put each library in new line"></textarea>
 
 				<div style="margin-top:20px;">
 					Choose from popular libraries:
diff --git a/src/script.js b/src/script.js
index 0d59004..37f23da 100644
--- a/src/script.js
+++ b/src/script.js
@@ -324,8 +324,8 @@
 
 	function refreshEditor() {
 		titleInput.value = currentItem.title || 'Untitled';
-		externalJsTextarea.value = currentItem.externalLibs && (currentItem.externalLibs.js || '');
-		externalCssTextarea.value = currentItem.externalLibs && (currentItem.externalLibs.css || '');
+		externalJsTextarea.value = (currentItem.externalLibs && currentItem.externalLibs.js) || '';
+		externalCssTextarea.value = (currentItem.externalLibs && currentItem.externalLibs.css) || '';
 		externalJsTextarea.dispatchEvent(new Event('change'));
 
 		editur.cm.html.setValue(currentItem.html);
@@ -646,15 +646,18 @@
 
 		utils.onButtonClick(helpBtn, function () {
 			helpModal.classList.toggle('is-modal-visible');
+			document.body.classList[helpModal.classList.contains('is-modal-visible') ? 'add' : 'remove']('overlay-visible');
 			trackEvent('ui', 'helpButtonClick');
 		});
 		utils.onButtonClick(addLibraryBtn, function () {
 			addLibraryModal.classList.toggle('is-modal-visible');
+			document.body.classList[addLibraryModal.classList.contains('is-modal-visible') ? 'add' : 'remove']('overlay-visible');
 			trackEvent('ui', 'addLibraryButtonClick');
 		});
 
 		notificationsBtn.addEventListener('click', function () {
 			notificationsModal.classList.toggle('is-modal-visible');
+			document.body.classList[notificationsModal.classList.contains('is-modal-visible') ? 'add' : 'remove']('overlay-visible');
 			if (notificationsModal.classList.contains('is-modal-visible') && !hasSeenNotifications) {
 				hasSeenNotifications = true;
 				notificationsBtn.classList.remove('has-new');
@@ -781,7 +784,7 @@
 		});
 
 		utils.onButtonClick(settingsBtn, function() {
-			if (!chrome.runtime.openOptionsPage) {
+			if (chrome.runtime.openOptionsPage) {
 				// New way to open options pages, if supported (Chrome 42+).
 				// Bug: https://bugs.chromium.org/p/chromium/issues/detail?id=601997
 				// Until this bug fixes, use the