diff --git a/.vuepress/scss/_fonts.scss b/.vuepress/scss/_fonts.scss
new file mode 100644
index 0000000..dfa54d5
--- /dev/null
+++ b/.vuepress/scss/_fonts.scss
@@ -0,0 +1,260 @@
+/*
+  Copied from https://fonts.googleapis.com/css?family=Roboto:300,400,500,700|Material+Icons
+*/
+
+/* fallback */
+@font-face {
+  font-family: 'Material Icons';
+  font-style: normal;
+  font-weight: 400;
+  src: url(https://fonts.gstatic.com/s/materialicons/v36/flUhRq6tzZclQEJ-Vdg-IuiaDsNc.woff2) format('woff2');
+}
+/* cyrillic-ext */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 300;
+  src: local('Roboto Light'), local('Roboto-Light'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmSU5fCRc4EsA.woff2) format('woff2');
+  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
+}
+/* cyrillic */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 300;
+  src: local('Roboto Light'), local('Roboto-Light'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmSU5fABc4EsA.woff2) format('woff2');
+  unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
+}
+/* greek-ext */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 300;
+  src: local('Roboto Light'), local('Roboto-Light'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmSU5fCBc4EsA.woff2) format('woff2');
+  unicode-range: U+1F00-1FFF;
+}
+/* greek */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 300;
+  src: local('Roboto Light'), local('Roboto-Light'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmSU5fBxc4EsA.woff2) format('woff2');
+  unicode-range: U+0370-03FF;
+}
+/* vietnamese */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 300;
+  src: local('Roboto Light'), local('Roboto-Light'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmSU5fCxc4EsA.woff2) format('woff2');
+  unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
+}
+/* latin-ext */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 300;
+  src: local('Roboto Light'), local('Roboto-Light'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmSU5fChc4EsA.woff2) format('woff2');
+  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
+}
+/* latin */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 300;
+  src: local('Roboto Light'), local('Roboto-Light'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmSU5fBBc4.woff2) format('woff2');
+  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
+}
+/* cyrillic-ext */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Roboto'), local('Roboto-Regular'), url(https://fonts.gstatic.com/s/roboto/v18/KFOmCnqEu92Fr1Mu72xKOzY.woff2) format('woff2');
+  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
+}
+/* cyrillic */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Roboto'), local('Roboto-Regular'), url(https://fonts.gstatic.com/s/roboto/v18/KFOmCnqEu92Fr1Mu5mxKOzY.woff2) format('woff2');
+  unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
+}
+/* greek-ext */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Roboto'), local('Roboto-Regular'), url(https://fonts.gstatic.com/s/roboto/v18/KFOmCnqEu92Fr1Mu7mxKOzY.woff2) format('woff2');
+  unicode-range: U+1F00-1FFF;
+}
+/* greek */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Roboto'), local('Roboto-Regular'), url(https://fonts.gstatic.com/s/roboto/v18/KFOmCnqEu92Fr1Mu4WxKOzY.woff2) format('woff2');
+  unicode-range: U+0370-03FF;
+}
+/* vietnamese */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Roboto'), local('Roboto-Regular'), url(https://fonts.gstatic.com/s/roboto/v18/KFOmCnqEu92Fr1Mu7WxKOzY.woff2) format('woff2');
+  unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
+}
+/* latin-ext */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Roboto'), local('Roboto-Regular'), url(https://fonts.gstatic.com/s/roboto/v18/KFOmCnqEu92Fr1Mu7GxKOzY.woff2) format('woff2');
+  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
+}
+/* latin */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Roboto'), local('Roboto-Regular'), url(https://fonts.gstatic.com/s/roboto/v18/KFOmCnqEu92Fr1Mu4mxK.woff2) format('woff2');
+  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
+}
+/* cyrillic-ext */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 500;
+  src: local('Roboto Medium'), local('Roboto-Medium'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmEU9fCRc4EsA.woff2) format('woff2');
+  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
+}
+/* cyrillic */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 500;
+  src: local('Roboto Medium'), local('Roboto-Medium'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmEU9fABc4EsA.woff2) format('woff2');
+  unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
+}
+/* greek-ext */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 500;
+  src: local('Roboto Medium'), local('Roboto-Medium'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmEU9fCBc4EsA.woff2) format('woff2');
+  unicode-range: U+1F00-1FFF;
+}
+/* greek */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 500;
+  src: local('Roboto Medium'), local('Roboto-Medium'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmEU9fBxc4EsA.woff2) format('woff2');
+  unicode-range: U+0370-03FF;
+}
+/* vietnamese */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 500;
+  src: local('Roboto Medium'), local('Roboto-Medium'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmEU9fCxc4EsA.woff2) format('woff2');
+  unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
+}
+/* latin-ext */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 500;
+  src: local('Roboto Medium'), local('Roboto-Medium'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmEU9fChc4EsA.woff2) format('woff2');
+  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
+}
+/* latin */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 500;
+  src: local('Roboto Medium'), local('Roboto-Medium'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmEU9fBBc4.woff2) format('woff2');
+  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
+}
+/* sampled usage */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 500;
+  src: url(https://fonts.gstatic.com/stats/Roboto/normal/500);
+  unicode-range: U+20;
+}
+/* cyrillic-ext */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 700;
+  src: local('Roboto Bold'), local('Roboto-Bold'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmWUlfCRc4EsA.woff2) format('woff2');
+  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
+}
+/* cyrillic */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 700;
+  src: local('Roboto Bold'), local('Roboto-Bold'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmWUlfABc4EsA.woff2) format('woff2');
+  unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
+}
+/* greek-ext */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 700;
+  src: local('Roboto Bold'), local('Roboto-Bold'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmWUlfCBc4EsA.woff2) format('woff2');
+  unicode-range: U+1F00-1FFF;
+}
+/* greek */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 700;
+  src: local('Roboto Bold'), local('Roboto-Bold'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmWUlfBxc4EsA.woff2) format('woff2');
+  unicode-range: U+0370-03FF;
+}
+/* vietnamese */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 700;
+  src: local('Roboto Bold'), local('Roboto-Bold'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmWUlfCxc4EsA.woff2) format('woff2');
+  unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
+}
+/* latin-ext */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 700;
+  src: local('Roboto Bold'), local('Roboto-Bold'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmWUlfChc4EsA.woff2) format('woff2');
+  unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
+}
+/* latin */
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 700;
+  src: local('Roboto Bold'), local('Roboto-Bold'), url(https://fonts.gstatic.com/s/roboto/v18/KFOlCnqEu92Fr1MmWUlfBBc4.woff2) format('woff2');
+  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
+}
+
+.material-icons {
+  font-family: 'Material Icons';
+  font-weight: normal;
+  font-style: normal;
+  font-size: 24px;
+  line-height: 1;
+  letter-spacing: normal;
+  text-transform: none;
+  display: inline-block;
+  white-space: nowrap;
+  word-wrap: normal;
+  direction: ltr;
+  -moz-font-feature-settings: 'liga';
+  -moz-osx-font-smoothing: grayscale;
+}
+ 
diff --git a/.vuepress/theme/Layout.vue b/.vuepress/theme/Layout.vue
index e4b7209..23b27cf 100644
--- a/.vuepress/theme/Layout.vue
+++ b/.vuepress/theme/Layout.vue
@@ -100,10 +100,11 @@ export default {
 </script>
 
 <style src="../../node_modules/vuetify/dist/vuetify.min.css"></style>
-<style src="../../node_modules/material-design-icons-iconfont/dist/material-design-icons.css"></style>
 
 <style lang="scss">
 
+@import '../scss/fonts';
+
 html {
   font-size: 16px;
 }
diff --git a/package.json b/package.json
index 29aaef1..85c3dff 100644
--- a/package.json
+++ b/package.json
@@ -9,20 +9,19 @@
   },
   "license": "ISC",
   "dependencies": {
+    "cors": "^2.8.4",
+    "express": "^4.16.3",
+    "heroku-ssl-redirect": "0.0.4",
     "highlight.js": "^9.12.0",
-    "material-design-icons-iconfont": "^3.0.3",
+    "node-sass": "^4.8.3",
+    "request": "^2.85.0",
+    "sass-loader": "^7.0.1",
     "vue": "^2.5.16",
     "vue-highlightjs": "^1.3.3",
     "vue-image-upload-resize": "^1.1.6",
     "vue-images-loaded": "^1.1.2",
     "vue-resource": "^1.5.0",
-    "vuetify": "^1.0.16",
-    "cors": "^2.8.4",
-    "express": "^4.16.3",
-    "heroku-ssl-redirect": "0.0.4",
-    "sass-loader": "^7.0.1",
-    "node-sass": "^4.8.3",
-    "request": "^2.85.0",
-    "vuepress": "^0.7.0"
+    "vuepress": "^0.7.0",
+    "vuetify": "^1.0.16"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index f0d4773..9cbaded 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3129,10 +3129,6 @@ markdown-it@^8.4.1:
     mdurl "^1.0.1"
     uc.micro "^1.0.5"
 
-material-design-icons-iconfont@^3.0.3:
-  version "3.0.3"
-  resolved "https://registry.yarnpkg.com/material-design-icons-iconfont/-/material-design-icons-iconfont-3.0.3.tgz#154a1084047d4e27237fa7f5a37e1075ceea6df2"
-
 math-expression-evaluator@^1.2.14:
   version "1.2.17"
   resolved "https://registry.yarnpkg.com/math-expression-evaluator/-/math-expression-evaluator-1.2.17.tgz#de819fdbcd84dccd8fae59c6aeb79615b9d266ac"