Fixing Angular 21 by migrating all values by signals. (#11)

frontend/src/app/components/footer/footer.component.scss

@@ -1,31 +1,33 @@
 :host {
-    background-color: #3f51b5;
-    color: rgba(255,255,255,.6);
+  background-color: #3f51b5;
+  color: rgba(255, 255, 255, .6);
+  display: flex;
+  flex-direction: row;
+  justify-content: space-around;
+  align-items: center;
+  padding: .5em;
+  font-size: 1.1em;
+
+  div {
     display: flex;
     flex-direction: row;
-    justify-content: space-around;
     align-items: center;
-    padding: .5em;
-    font-size: 1.1em;
+    gap: .2em;
 
-    div {
-        display: flex;
-        flex-direction: row;
-        align-items: center;
-
-        .copy-left {
-            transform: rotate(180deg);
-        }
-        a {
-            text-decoration: none;
-            color: rgba(255,255,255,.6);
-        }
-
-        mat-icon {
-            font-size: 1em;
-            display: flex;
-            justify-content: center;
-            align-items: center;
-        }
+    .copy-left {
+      transform: rotate(180deg);
     }
-}
+
+    a {
+      text-decoration: none;
+      color: rgba(255, 255, 255, .6);
+    }
+
+    mat-icon {
+      font-size: 1em;
+      display: flex;
+      justify-content: center;
+      align-items: center;
+    }
+  }
+}