Update: fix error page theme

src/main/resources/static/css/error.css

@@ -1,17 +1,8 @@
-h1 {
-  text-align: center;
-  margin-top: 10%;
-}
-
 p {
   text-align: center;
   margin-top: 2em;
 }
 
-.button:hover {
-  background-color: #005b7f;
-}
-
 .features-container {
   display: grid;
   grid-template-columns: repeat(auto-fill, minmax(21rem, 3fr));
@@ -31,58 +22,21 @@ p {
   flex: 1;
 }
 
-#support-section {
-  background-color: #f9f9f9;
-  padding: 4rem;
-  margin-top: 1rem;
-  text-align: center;
-}
-
-#support-section h1 {
-  margin-top: 0;
-}
-
-#support-section p {
-  margin-top: 0;
-}
-
 #button-group {
   display: flex;
   justify-content: center;
   flex-wrap: wrap;
 }
 
+#home-button,
 #github-button,
 #discord-button {
   display: inline-block;
   padding: 1rem 2rem;
   margin: 1rem;
-  background-color: #008cba;
-  color: #fff;
   font-size: 1.2rem;
   text-align: center;
   text-decoration: none;
   border-radius: 3rem;
   transition: all 0.3s ease-in-out;
-}
-
-#github-button:hover,
-#discord-button:hover,
-.home-button:hover {
-  background-color: #005b7f;
-}
-
-.home-button {
-  display: block;
-  width: 200px;
-  height: 50px;
-  margin: 2em auto;
-  background-color: #008cba;
-  color: white;
-  text-align: center;
-  line-height: 50px;
-  text-decoration: none;
-  font-weight: bold;
-  border-radius: 25px;
-  transition: all 0.3s ease-in-out;
-}
+}