diff --git a/docs/content/doc/features/authentication.en-us.md b/docs/content/doc/features/authentication.en-us.md
index 4a016fc13..bc4c33ad4 100644
--- a/docs/content/doc/features/authentication.en-us.md
+++ b/docs/content/doc/features/authentication.en-us.md
@@ -238,9 +238,9 @@ Before activating SSPI single sign-on authentication (SSO) you have to prepare y
 
 - Sign in to a client computer in the same domain with any domain user (client computer, different from the server running `gitea.exe`)
 
-- If you are using Chrome, Edge or Internet Explorer, add the URL of the web app to the Local intranet sites (`Internet Options -> Security -> Local intranet -> Sites`)
+- If you are using Chrome or Edge, add the URL of the web app to the Local intranet sites (`Internet Options -> Security -> Local intranet -> Sites`)
 
-- Start Chrome, Edge or Internet Explorer and navigate to the FQDN URL of gitea (eg. `http://host.domain.local:3000`)
+- Start Chrome or Edge and navigate to the FQDN URL of gitea (eg. `http://host.domain.local:3000`)
 
 - Click the `Sign In` button on the dashboard and choose SSPI to be automatically logged in with the same user that is currently logged on to the computer
 
diff --git a/docs/content/page/index.en-us.md b/docs/content/page/index.en-us.md
index 0924865f6..ed053f04b 100644
--- a/docs/content/page/index.en-us.md
+++ b/docs/content/page/index.en-us.md
@@ -261,7 +261,9 @@ Windows, on architectures like amd64, i386, ARM, PowerPC, and others.
 
 ## Browser Support
 
-- Please see [Semantic UI](https://github.com/Semantic-Org/Semantic-UI#browser-support) for specific versions of supported browsers.
+- Last 2 versions of Chrome, Firefox and Safari
+- Firefox ESR
+- Edge 14+
 
 ## Components
 
diff --git a/package.json b/package.json
index 7fb8246af..e48bb2081 100644
--- a/package.json
+++ b/package.json
@@ -58,6 +58,8 @@
     "updates": "10.2.11"
   },
   "browserslist": [
-    "defaults"
+    "defaults",
+    "not ie > 0",
+    "not ie_mob > 0"
   ]
 }
diff --git a/public/vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-700.woff b/public/vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-700.woff
deleted file mode 100644
index 8c9b02410..000000000
Binary files a/public/vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-700.woff and /dev/null differ
diff --git a/public/vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-700italic.woff b/public/vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-700italic.woff
deleted file mode 100644
index 55befb695..000000000
Binary files a/public/vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-700italic.woff and /dev/null differ
diff --git a/public/vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-italic.woff b/public/vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-italic.woff
deleted file mode 100644
index cd91cce9c..000000000
Binary files a/public/vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-italic.woff and /dev/null differ
diff --git a/public/vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-regular.woff b/public/vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-regular.woff
deleted file mode 100644
index 7245f5cae..000000000
Binary files a/public/vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-regular.woff and /dev/null differ
diff --git a/web_src/js/index.js b/web_src/js/index.js
index b80881237..af1c4acd4 100644
--- a/web_src/js/index.js
+++ b/web_src/js/index.js
@@ -3,7 +3,6 @@
 /* exported toggleDeadlineForm, setDeadline, updateDeadline, deleteDependencyModal, cancelCodeComment, onOAuthLoginClick */
 
 import './publicpath.js';
-import './polyfills.js';
 
 import Vue from 'vue';
 import 'jquery.are-you-sure';
diff --git a/web_src/js/polyfills.js b/web_src/js/polyfills.js
deleted file mode 100644
index 0063b6d25..000000000
--- a/web_src/js/polyfills.js
+++ /dev/null
@@ -1,17 +0,0 @@
-// compat: IE11
-if (!Element.prototype.matches) {
-  Element.prototype.matches = Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;
-}
-
-// compat: IE11
-if (!Element.prototype.closest) {
-  Element.prototype.closest = function (s) {
-    let el = this;
-
-    do {
-      if (el.matches(s)) return el;
-      el = el.parentElement || el.parentNode;
-    } while (el !== null && el.nodeType === 1);
-    return null;
-  };
-}
diff --git a/web_src/js/publicpath.js b/web_src/js/publicpath.js
index 392c03e70..892bb459a 100644
--- a/web_src/js/publicpath.js
+++ b/web_src/js/publicpath.js
@@ -1,11 +1,5 @@
 // This sets up webpack's chunk loading to load resources from the 'public'
 // directory. This file must be imported before any lazy-loading is being attempted.
 
-if (document.currentScript && document.currentScript.src) {
-  const url = new URL(document.currentScript.src);
-  __webpack_public_path__ = url.pathname.replace(/\/[^/]*?\/[^/]*?$/, '/');
-} else {
-  // compat: IE11
-  const script = document.querySelector('script[src*="/index.js"]');
-  __webpack_public_path__ = script.getAttribute('src').replace(/\/[^/]*?\/[^/]*?$/, '/');
-}
+const url = new URL(document.currentScript.src);
+__webpack_public_path__ = url.pathname.replace(/\/[^/]*?\/[^/]*?$/, '/');
diff --git a/web_src/less/_base.less b/web_src/less/_base.less
index 823ad151d..03dc61a98 100644
--- a/web_src/less/_base.less
+++ b/web_src/less/_base.less
@@ -7,9 +7,7 @@
         local('Roboto'),
         local('Roboto-Regular'),
         /* Chrome 26+, Opera 23+, Firefox 39+ */
-        url('../vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-regular.woff2') format('woff2'),
-        /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
-        url('../vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-regular.woff') format('woff');
+        url('../vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-regular.woff2') format('woff2');
 }
 
 /* roboto-italic - latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext */
@@ -20,10 +18,7 @@
     src:
         local('Roboto Italic'),
         local('Roboto-Italic'),
-        /* Chrome 26+, Opera 23+, Firefox 39+ */
-        url('../vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-italic.woff2') format('woff2'),
-        /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
-        url('../vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-italic.woff') format('woff');
+        url('../vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-italic.woff2') format('woff2');
 }
 
 /* roboto-700 - latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext */
@@ -34,10 +29,7 @@
     src:
         local('Roboto Bold'),
         local('Roboto-Bold'),
-        /* Chrome 26+, Opera 23+, Firefox 39+ */
-        url('../vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-700.woff2') format('woff2'),
-        /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
-        url('../vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-700.woff') format('woff');
+        url('../vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-700.woff2') format('woff2');
 }
 
 /* roboto-700italic - latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext */
@@ -48,10 +40,7 @@
     src:
         local('Roboto Bold Italic'),
         local('Roboto-BoldItalic'),
-        /* Chrome 26+, Opera 23+, Firefox 39+ */
-        url('../vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-700italic.woff2') format('woff2'),
-        /* Chrome 6+, Firefox 3.6+, IE 9+, Safari 5.1+ */
-        url('../vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-700italic.woff') format('woff');
+        url('../vendor/assets/roboto-fonts/roboto-v20-latin-ext_cyrillic-ext_latin_greek_vietnamese_cyrillic_greek-ext-700italic.woff2') format('woff2');
 }
 
 @font-face {