Remove a few redundant rules

Author: Abhiek187

src/css/App.css

@@ -10,7 +10,6 @@ a {
 }
 
 header,
-nav,
 main,
 footer {
   background-color: white;
@@ -78,7 +77,6 @@ main {
 
 /* Nav */
 .links {
-  background-color: transparent; /* No background */
   display: flex;
   justify-content: center;
   padding: 0;
@@ -91,7 +89,6 @@ main {
 .links-about:hover,
 .links-projects:hover,
 .links-contact:hover {
-  /*border-bottom: 2px solid black;*/
   background-color: lightgray;
 }