fix: improve font support

Add local variations and web (eot, woff2, woff, ttf).

src/index.css

@@ -16,30 +16,6 @@
   box-sizing: border-box;
 }
 
-@font-face {
-  font-family: 'Roboto';
-  font-weight: 300;
-  src: local('Roboto-Light'), url(./assets/roboto-font/Roboto-Light.ttf);
-}
-
-@font-face {
-  font-family: 'Roboto';
-  font-weight: 400;
-  src: local('Roboto-Regular'), url(./assets/Roboto-font/Roboto-Regular.ttf);
-}
-
-@font-face {
-  font-family: 'Roboto';
-  font-weight: 500;
-  src: local('Roboto-Medium'), url(./assets/Roboto-font/Roboto-Medium.ttf);
-}
-
-@font-face {
-  font-family: 'Roboto';
-  font-weight: 700;
-  src: local('Roboto-Bold'), url(./assets/Roboto-font/Roboto-Bold.ttf);
-}
-
 body {
   margin: 0;
   min-width: 320px;
@@ -131,3 +107,160 @@ button:disabled {
   border-radius: 50%;
   overflow: hidden;
 }
+
+/* Fonts */
+@font-face {
+  font-family: 'Roboto';
+  src: url('assets/fonts/roboto-medium.eot');
+  src: local('Roboto Medium'), local('Roboto-Medium'),
+    url('assets/fonts/roboto-medium.eot?#iefix') format('embedded-opentype'),
+    url('assets/fonts/roboto-medium.woff2') format('woff2'),
+    url('assets/fonts/roboto-medium.woff') format('woff'),
+    url('assets/fonts/roboto-medium.ttf') format('truetype');
+  font-weight: 500;
+  font-style: normal;
+  font-display: swap;
+}
+
+@font-face {
+  font-family: 'Roboto';
+  src: url('assets/fonts/roboto-lightitalic.eot');
+  src: local('Roboto Light Italic'), local('Roboto-LightItalic'),
+    url('assets/fonts/roboto-lightitalic.eot?#iefix') format('embedded-opentype'),
+    url('assets/fonts/roboto-lightitalic.woff2') format('woff2'),
+    url('assets/fonts/roboto-lightitalic.woff') format('woff'),
+    url('assets/fonts/roboto-lightitalic.ttf') format('truetype');
+  font-weight: 300;
+  font-style: italic;
+  font-display: swap;
+}
+
+@font-face {
+  font-family: 'Roboto';
+  src: url('assets/fonts/roboto-blackitalic.eot');
+  src: local('Roboto Black Italic'), local('Roboto-BlackItalic'),
+    url('assets/fonts/roboto-blackitalic.eot?#iefix') format('embedded-opentype'),
+    url('assets/fonts/roboto-blackitalic.woff2') format('woff2'),
+    url('assets/fonts/roboto-blackitalic.woff') format('woff'),
+    url('assets/fonts/roboto-blackitalic.ttf') format('truetype');
+  font-weight: 900;
+  font-style: italic;
+  font-display: swap;
+}
+
+@font-face {
+  font-family: 'Roboto';
+  src: url('assets/fonts/roboto-light.eot');
+  src: local('Roboto Light'), local('Roboto-Light'),
+    url('assets/fonts/roboto-light.eot?#iefix') format('embedded-opentype'),
+    url('assets/fonts/roboto-light.woff2') format('woff2'),
+    url('assets/fonts/roboto-light.woff') format('woff'),
+    url('assets/fonts/roboto-light.ttf') format('truetype');
+  font-weight: 300;
+  font-style: normal;
+  font-display: swap;
+}
+
+@font-face {
+  font-family: 'Roboto';
+  src: url('assets/fonts/roboto-bolditalic.eot');
+  src: local('Roboto Bold Italic'), local('Roboto-BoldItalic'),
+    url('assets/fonts/roboto-bolditalic.eot?#iefix') format('embedded-opentype'),
+    url('assets/fonts/roboto-bolditalic.woff2') format('woff2'),
+    url('assets/fonts/roboto-bolditalic.woff') format('woff'),
+    url('assets/fonts/roboto-bolditalic.ttf') format('truetype');
+  font-weight: bold;
+  font-style: italic;
+  font-display: swap;
+}
+
+@font-face {
+  font-family: 'Roboto';
+  src: url('assets/fonts/roboto-bold.eot');
+  src: local('Roboto Bold'), local('Roboto-Bold'),
+    url('assets/fonts/roboto-bold.eot?#iefix') format('embedded-opentype'),
+    url('assets/fonts/roboto-bold.woff2') format('woff2'),
+    url('assets/fonts/roboto-bold.woff') format('woff'),
+    url('assets/fonts/roboto-bold.ttf') format('truetype');
+  font-weight: bold;
+  font-style: normal;
+  font-display: swap;
+}
+
+@font-face {
+  font-family: 'Roboto';
+  src: url('assets/fonts/roboto-mediumitalic.eot');
+  src: local('Roboto Medium Italic'), local('Roboto-MediumItalic'),
+    url('assets/fonts/roboto-mediumitalic.eot?#iefix') format('embedded-opentype'),
+    url('assets/fonts/roboto-mediumitalic.woff2') format('woff2'),
+    url('assets/fonts/roboto-mediumitalic.woff') format('woff'),
+    url('assets/fonts/roboto-mediumitalic.ttf') format('truetype');
+  font-weight: 500;
+  font-style: italic;
+  font-display: swap;
+}
+
+@font-face {
+  font-family: 'Roboto';
+  src: url('assets/fonts/roboto-black.eot');
+  src: local('Roboto Black'), local('Roboto-Black'),
+    url('assets/fonts/roboto-black.eot?#iefix') format('embedded-opentype'),
+    url('assets/fonts/roboto-black.woff2') format('woff2'),
+    url('assets/fonts/roboto-black.woff') format('woff'),
+    url('assets/fonts/roboto-black.ttf') format('truetype');
+  font-weight: 900;
+  font-style: normal;
+  font-display: swap;
+}
+
+@font-face {
+  font-family: 'Roboto';
+  src: url('assets/fonts/roboto-italic.eot');
+  src: local('Roboto Italic'), local('Roboto-Italic'),
+    url('assets/fonts/roboto-italic.eot?#iefix') format('embedded-opentype'),
+    url('assets/fonts/roboto-italic.woff2') format('woff2'),
+    url('assets/fonts/roboto-italic.woff') format('woff'),
+    url('assets/fonts/roboto-italic.ttf') format('truetype');
+  font-weight: normal;
+  font-style: italic;
+  font-display: swap;
+}
+
+@font-face {
+  font-family: 'Roboto';
+  src: url('assets/fonts/roboto-thinitalic.eot');
+  src: local('Roboto Thin Italic'), local('Roboto-ThinItalic'),
+    url('assets/fonts/roboto-thinitalic.eot?#iefix') format('embedded-opentype'),
+    url('assets/fonts/roboto-thinitalic.woff2') format('woff2'),
+    url('assets/fonts/roboto-thinitalic.woff') format('woff'),
+    url('assets/fonts/roboto-thinitalic.ttf') format('truetype');
+  font-weight: 100;
+  font-style: italic;
+  font-display: swap;
+}
+
+@font-face {
+  font-family: 'Roboto';
+  src: url('assets/fonts/roboto-thin.eot');
+  src: local('Roboto Thin'), local('Roboto-Thin'),
+    url('assets/fonts/roboto-thin.eot?#iefix') format('embedded-opentype'),
+    url('assets/fonts/roboto-thin.woff2') format('woff2'),
+    url('assets/fonts/roboto-thin.woff') format('woff'),
+    url('assets/fonts/roboto-thin.ttf') format('truetype');
+  font-weight: 100;
+  font-style: normal;
+  font-display: swap;
+}
+
+@font-face {
+  font-family: 'Roboto';
+  src: url('assets/fonts/roboto-regular.eot');
+  src: local('Roboto'), local('Roboto-Regular'),
+    url('assets/fonts/roboto-regular.eot?#iefix') format('embedded-opentype'),
+    url('assets/fonts/roboto-regular.woff2') format('woff2'),
+    url('assets/fonts/roboto-regular.woff') format('woff'),
+    url('assets/fonts/roboto-regular.ttf') format('truetype');
+  font-weight: normal;
+  font-style: normal;
+  font-display: swap;
+}