Changed styling of the spinner in styles.css

static/css/styles.css

@@ -1556,7 +1556,7 @@ create an even border-bottom line */
     left: 0;
     width: 100vw;
     height: 100vh;
-    background: rgba(255, 255, 255, 0.9);
+    background: rgba(0, 0, 0, 0.8);
     display: none; /* hidden by default */
     justify-content: center;
     align-items: center;
@@ -1565,7 +1565,7 @@ create an even border-bottom line */
 
 .spinner {
     border: 8px solid #f3f3f3;
-    border-top: 8px solid #3498db;
+    border-top: 8px solid #00FFFF;
     border-radius: 50%;
     width: 60px;
     height: 60px;