diff --git a/fonts/FiraSans-Regular.ttf b/fonts/FiraSans-Regular.ttf
new file mode 100755
index 0000000..7544de9
Binary files /dev/null and b/fonts/FiraSans-Regular.ttf differ
diff --git a/fonts/FiraSans-SemiBold.ttf b/fonts/FiraSans-SemiBold.ttf
new file mode 100755
index 0000000..8ea5aaf
Binary files /dev/null and b/fonts/FiraSans-SemiBold.ttf differ
diff --git a/js/readinglist.js b/js/readinglist.js
index b281b0c..3072a53 100644
--- a/js/readinglist.js
+++ b/js/readinglist.js
@@ -36,7 +36,7 @@ function createReadingItemEl(info) {
   }
 
   var delBtn = document.createElement('a');
-  delBtn.innerHTML = '×';
+  delBtn.textContent = '×';
   delBtn.id = url;
   delBtn.className = 'button delete-button';
   item.appendChild(link);
diff --git a/manifest.json b/manifest.json
index 8e62b4b..7aa1754 100644
--- a/manifest.json
+++ b/manifest.json
@@ -11,7 +11,11 @@
     "128": "icons/icon128.png"
   },
   "browser_action": {
-    "default_popup": "html/popup.html"
+    "default_popup": "html/popup.html",
+    "default_icon": {
+      "16": "icons/icon16.png",
+      "32": "icons/icon32.png"
+    }
   },
   "background": {
     "scripts": [
diff --git a/style/font.css b/style/font.css
new file mode 100644
index 0000000..601482f
--- /dev/null
+++ b/style/font.css
@@ -0,0 +1,112 @@
+/* cyrillic-ext */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Fira Sans Regular'), local('FiraSans-Regular'), url(../fonts/FiraSans-Regular.ttf);
+  unicode-range: U+0460-052F, U+20B4, U+2DE0-2DFF, U+A640-A69F;
+}
+/* cyrillic */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Fira Sans Regular'), local('FiraSans-Regular'), url(../fonts/FiraSans-Regular.ttf);
+  unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
+}
+/* greek-ext */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Fira Sans Regular'), local('FiraSans-Regular'), url(../fonts/FiraSans-Regular.ttf);
+  unicode-range: U+1F00-1FFF;
+}
+/* greek */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Fira Sans Regular'), local('FiraSans-Regular'), url(../fonts/FiraSans-Regular.ttf);
+  unicode-range: U+0370-03FF;
+}
+/* vietnamese */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Fira Sans Regular'), local('FiraSans-Regular'), url(../fonts/FiraSans-Regular.ttf);
+  unicode-range: U+0102-0103, U+1EA0-1EF9, U+20AB;
+}
+/* latin-ext */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Fira Sans Regular'), local('FiraSans-Regular'), url(../fonts/FiraSans-Regular.ttf);
+  unicode-range: U+0100-024F, U+1E00-1EFF, U+20A0-20AB, U+20AD-20CF, U+2C60-2C7F, U+A720-A7FF;
+}
+/* latin */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Fira Sans Regular'), local('FiraSans-Regular'), url(../fonts/FiraSans-Regular.ttf);
+  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2212, U+2215;
+}
+/* cyrillic-ext */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 600;
+  src: local('Fira Sans SemiBold'), local('FiraSans-SemiBold'), url(../fonts/FiraSans-SemiBold.ttf);
+  unicode-range: U+0460-052F, U+20B4, U+2DE0-2DFF, U+A640-A69F;
+}
+/* cyrillic */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 600;
+  src: local('Fira Sans SemiBold'), local('FiraSans-SemiBold'), url(../fonts/FiraSans-SemiBold.ttf);
+  unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
+}
+/* greek-ext */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 600;
+  src: local('Fira Sans SemiBold'), local('FiraSans-SemiBold'), url(../fonts/FiraSans-SemiBold.ttf);
+  unicode-range: U+1F00-1FFF;
+}
+/* greek */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 600;
+  src: local('Fira Sans SemiBold'), local('FiraSans-SemiBold'), url(../fonts/FiraSans-SemiBold.ttf);
+  unicode-range: U+0370-03FF;
+}
+/* vietnamese */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 600;
+  src: local('Fira Sans SemiBold'), local('FiraSans-SemiBold'), url(../fonts/FiraSans-SemiBold.ttf);
+  unicode-range: U+0102-0103, U+1EA0-1EF9, U+20AB;
+}
+/* latin-ext */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 600;
+  src: local('Fira Sans SemiBold'), local('FiraSans-SemiBold'), url(../fonts/FiraSans-SemiBold.ttf);
+  unicode-range: U+0100-024F, U+1E00-1EFF, U+20A0-20AB, U+20AD-20CF, U+2C60-2C7F, U+A720-A7FF;
+}
+/* latin */
+@font-face {
+  font-family: 'Fira Sans';
+  font-style: normal;
+  font-weight: 600;
+  src: local('Fira Sans SemiBold'), local('FiraSans-SemiBold'), url(../fonts/FiraSans-SemiBold.ttf);
+  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2212, U+2215;
+}
diff --git a/style/popup.css b/style/popup.css
index b57af23..fefb822 100644
--- a/style/popup.css
+++ b/style/popup.css
@@ -1,4 +1,4 @@
-@import url('https://fonts.googleapis.com/css?family=Fira+Sans:400,600');
+@import url('font.css');
 
 * {
   -webkit-box-sizing: border-box;