Client - minor style changes

fittrackee_client/src/components/App.css

@@ -267,15 +267,21 @@ label {
 }
 
 .dropdown-list {
-  background-color: #fff;
+  background-color: #f8f9fa;
   padding: 5px 0;
   position: absolute;
+  text-align: left;
   z-index: 10;
 }
+
 .dropdown-item {
   cursor: default;
   font-size: 0.9em;
-  font-weight: bold;
+
+}
+
+.dropdown-item-selected {
+    font-weight: bold;
 }
 
 .fa-question-circle {

fittrackee_client/src/components/NavBar/LanguageDropdown.jsx

@@ -52,7 +52,11 @@ class Dropdown extends Component {
             )
             .map(language => (
               <li
-                className="dropdown-item"
+                className={`dropdown-item${
+                  language.name === selected && isOpen
+                    ? ' dropdown-item-selected'
+                    : ''
+                }`}
                 key={language.name}
                 onClick={() => this.selectLanguage(language.name)}
               >