Clean up style

apps/client/src/app/pages/about/about-page.scss

@@ -2,13 +2,8 @@
   color: rgb(var(--dark-primary-text));
   display: block;
 
-  a {
-    color: rgb(var(--dark-primary-text));
-  }
-
   .mat-card {
-    &.about-container,
+    &.about-container {
-    &.changelog {
       a {
         color: rgba(var(--palette-primary-500), 1);
         font-weight: 500;
@@ -19,29 +14,6 @@
       }
     }
 
-    &.changelog {
-      ::ng-deep {
-        markdown {
-          h1,
-          p {
-            display: none;
-          }
-
-          h2 {
-            font-size: 18px;
-
-            &:not(:first-of-type) {
-              margin-top: 2rem;
-            }
-          }
-
-          h3 {
-            font-size: 15px;
-          }
-        }
-      }
-    }
-
     .independent-and-bootstrapped-logo {
       background-image: url('/assets/bootstrapped-dark.svg');
       background-position: center;
@@ -57,10 +29,6 @@
 :host-context(.is-dark-theme) {
   color: rgb(var(--light-primary-text));
 
-  a {
-    color: rgb(var(--light-primary-text));
-  }
-
   .mat-card {
     .independent-and-bootstrapped-logo {
       background-image: url('/assets/bootstrapped-light.svg');