Fix extra.css (15) (#915)

This PR fixes a small bug in the extra.css file related to contribution guide link.

Author: alina-derkach-oaza

docs/css/extra.css

@@ -24,52 +24,39 @@
   display: flex;
   flex-direction: column;    /* stack vertically */
   align-items: center;       /* center horizontally */
-  gap: 0.3rem;             /* Banner container */
-  .edit-contrib-banner {
-    display: flex;
-    justify-content: center;    /* center horizontally */
-    padding: 0.7rem 0;            /* top and bottom spacing of the banner */
-    background-color: transparent;
-  }
-  
-  /* Inner content stacked vertically */
-  .edit-contrib-banner .banner-content {
-    display: flex;
-    flex-direction: column;    /* stack vertically */
-    align-items: center;       /* center horizontally */
-    gap: 0.3rem;               /* small vertical gap between elements */
-  }
-  
-  /* Edit link styling */
-  .edit-contrib-banner .edit-page-link {
-    white-space: nowrap;
-    display: inline-flex;
-    align-items: center;
-    gap: 0.5em;
-    font-size: 1.2rem;
-    font-weight: normal;
-    color: var(--md-typeset-a-color);
-  }
-  
-  /* Icon inside edit link */
-  .edit-contrib-banner .edit-page-icon svg {
-    width: 1.4em;
-    height: 1.4em;
-    fill: currentColor;
-    vertical-align: middle;
-  }
-  
-  /* Divider line with small spacing */
-  .edit-contrib-banner .banner-divider {
-    width: 40%;                 /* width of the line */
-    border-top: 1px solid var(--md-typeset-a-color);
-    opacity: 0.3;               /* subtle line */
-    margin: 0.2rem 0;           /* smaller space above and below the line */
-  }
-  
-  /* Contributing Guide smaller and below */
-  .edit-contrib-banner .contrib-link {
-    font-size: 0.6rem !important;         /* smaller font */
-    color: var(--md-typeset-a-color);
-  }
-    
+  gap: 0.3rem;               /* small vertical gap between elements */
+}
+
+/* Edit link styling */
+.edit-contrib-banner .edit-page-link {
+  white-space: nowrap;
+  display: inline-flex;
+  align-items: center;
+  gap: 0.5em;
+  font-size: 1.2rem;
+  font-weight: normal;
+  color: var(--md-typeset-a-color);
+}
+
+/* Icon inside edit link */
+.edit-contrib-banner .edit-page-icon svg {
+  width: 1.4em;
+  height: 1.4em;
+  fill: currentColor;
+  vertical-align: middle;
+}
+
+/* Divider line with small spacing */
+.edit-contrib-banner .banner-divider {
+  width: 40%;                 /* width of the line */
+  border-top: 1px solid var(--md-typeset-a-color);
+  opacity: 0.3;               /* subtle line */
+  margin: 0.2rem 0;           /* smaller space above and below the line */
+}
+
+/* Contributing Guide smaller and below */
+.edit-contrib-banner .contrib-link {
+  font-size: 0.6rem !important;         /* smaller font */
+  color: var(--md-typeset-a-color);
+}
+