chore: improve styling

Author: devvaannsh

src/styles/Extn-TabBar.less

@@ -66,7 +66,7 @@
 .tab {
     display: inline-flex;
     align-items: center;
-    padding: 0 0.5rem;
+    padding: 0 0.5rem 0 0.85rem;
     height: 100%;
     background-color: #2D2D2D;
     border-right: 1px solid #333;
@@ -143,8 +143,8 @@
     color: #8D8D8E;
     font-size: 1.6rem;
     position: absolute;
-    left: 0.4rem;
-    top: 0.3rem;
+    left: 0.75rem;
+    top: 0.25rem;
 }
 
 .tab.dirty .tab-icon {
@@ -167,7 +167,7 @@
 
 .tab:hover .tab-close,
 .tab.active .tab-close {
-    visibility: visible;;
+    visibility: visible;
     opacity: 1;
     pointer-events: auto;
 }