diff --git a/package.json b/package.json
index b931344..2d0e930 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "node-fetch": "^2.1.2",
     "node-sass-chokidar": "^1.3.0",
     "npm-run-all": "^4.1.3",
-    "react-scripts": "^1.1.4",
+    "react-scripts": "^2.0.5",
     "react-test-renderer": "^16.4.1"
   },
   "dependencies": {
@@ -54,5 +54,11 @@
     "update-translations": "node update-translations.js",
     "test": "react-scripts test --env=jsdom",
     "eject": "react-scripts eject"
-  }
+  },
+  "browserslist": [
+    ">0.2%",
+    "not dead",
+    "not ie <= 11",
+    "not op_mini all"
+  ]
 }
diff --git a/public/img/favicon.png b/public/img/favicon.png
index 35dd8c9..4ce24f7 100644
Binary files a/public/img/favicon.png and b/public/img/favicon.png differ
diff --git a/src/components/common/Sidebar.js b/src/components/common/Sidebar.js
index b87468f..cd66fc1 100644
--- a/src/components/common/Sidebar.js
+++ b/src/components/common/Sidebar.js
@@ -35,9 +35,9 @@ export const navItem = (item, key, props) => (
 
 export const navDropdown = (item, key, props) => (
   <li key={key} className={dropDownClassList(item.url, props)}>
-    <a className="nav-link nav-dropdown-toggle" onClick={handleClick}>
+    <button className="nav-link nav-dropdown-toggle" onClick={handleClick}>
       <i className={"nav-icon " + item.icon}/>{props.t(item.name)}
-    </a>
+    </button>
     <ul className="nav-dropdown-items">
       {navList(item.children, props)}
     </ul>
diff --git a/src/img/backgroundLight.png b/src/img/backgroundLight.png
index f7c6e56..8046009 100644
Binary files a/src/img/backgroundLight.png and b/src/img/backgroundLight.png differ
diff --git a/src/scss/_custom.scss b/src/scss/_custom.scss
index 950615d..a83320a 100644
--- a/src/scss/_custom.scss
+++ b/src/scss/_custom.scss
@@ -172,3 +172,9 @@
 .sidebar .nav-item {
   cursor: pointer;
 }
+
+.sidebar button.nav-dropdown-toggle {
+  border: none;
+  width: 100%;
+  text-align: left;
+}