try to fix this spaghetti of a code

public/styles_login.css

@@ -6,7 +6,7 @@
     flex-direction: column;
     justify-content: center;
     align-items: center;
-    height: 100vh;
+    min-height: 100vh;
     margin: 0;
 }
 
@@ -82,43 +82,6 @@ button:disabled {
     text-align: center;
 }
 
-.hidden {
-    display: none !important;
-}
 
-#loading-screen {
-    position: fixed;
-    top: 0;
-    left: 0;
-    width: 100vw;
-    height: 100vh;
-    background: #000;
-    color: #0f0;
-    display: flex;
-    flex-direction: column;
-    justify-content: center;
-    align-items: center;
-    z-index: 9999;
-}
-
-.loading-text {
-    font-size: 24px;
-    margin-bottom: 20px;
-    text-shadow: 0 0 10px #0f0;
-}
-
-.progress-bar {
-    width: 80%;
-    height: 20px;
-    border: 2px solid #0f0;
-    border-radius: 10px;
-    background: #111;
-}
-
-.progress {
-    height: 100%;
-    width: 0;
-    background-color: #0f0;
-    border-radius: 10px;
-    transition: width 0.3s ease;
-}
+form { width: min(364px, calc(100vw - 32px)); }
+body { padding: 24px 0; }