chore: update signup page style

web/src/less/signin.less

 @import "./mixin.less";
 
 .page-wrapper.signin {
-  .flex(row, center, center);
-  @apply w-full min-h-screen bg-white;
+  @apply flex flex-row justify-center items-center w-full min-h-screen bg-white;
 
   > .page-container {
     @apply w-80 max-w-full py-4 -mt-16;
@@ -24,12 +23,10 @@
     }
 
     > .page-content-container {
-      .flex(column, flex-start, flex-start);
-      @apply w-full;
+      @apply flex flex-col justify-start items-start w-full;
 
       > .form-item-container {
-        .flex(column, flex-start, flex-start);
-        @apply relative w-full text-base mt-2;
+        @apply flex flex-col justify-start items-start relative w-full text-base mt-2;
 
         > .normal-text {
           @apply absolute top-3 left-3 px-1 leading-10 flex-shrink-0 text-base cursor-text text-gray-400 bg-transparent transition-all select-none;
@@ -54,8 +51,7 @@
     }
 
     > .action-btns-container {
-      .flex(row, flex-end, center);
-      @apply w-full mt-2;
+      @apply flex flex-row justify-end items-center w-full mt-2;
 
       > .btn {
         @apply px-1 py-2 text-sm rounded hover:opacity-80;
@@ -71,7 +67,11 @@
     }
 
     > .tip-text {
-      @apply w-full text-sm mt-4 text-gray-500 text-right whitespace-pre-wrap;
+      @apply w-auto inline-block float-right text-sm mt-4 text-gray-500 text-right whitespace-pre-wrap;
+
+      &.owner-tip {
+        @apply bg-blue-500 text-white px-2 py-1 rounded;
+      }
     }
   }
 }

web/src/pages/Signin.tsx

@@ -148,10 +148,10 @@ const Signin: React.FC<Props> = () => {
             </button>
           )}
         </div>
-        <p className="tip-text">
+        <p className={`tip-text ${siteOwner || pageLoadingState.isLoading ? "" : "owner-tip"}`}>
           {siteOwner || pageLoadingState.isLoading
             ? "If you don't have an account, please\ncontact the site owner."
-            : "You are registering as the site owner."}
+            : "You are registering as the Site Owner."}
         </p>
       </div>
     </div>