Show OAuth errors (2)

oauth/index.html

@@ -26,7 +26,7 @@
 				var url = new URL(window.location.href);
 				var error = url.searchParams.get('error');
 				if (error) {
-					document.getElementById('error').innerText = error;
+					document.getElementById('error').innerHTML = '<span>The email server said: <span class="error">' + error + '</span></span>';
 					document.getElementById('error').style.display = 'block';
 				}
 			} catch (error) {
@@ -43,7 +43,7 @@
 	<h1>FairEmail</h1>
 	<p><img src="https://raw.githubusercontent.com/M66B/FairEmail/master/app/src/main/ic_launcher-web.png" alt="FairEmail" height="72" width="72" /></p>
 	<h2>&#x1F6E1; OAuth</h2>
-	<p id="error" class="error" style="display: none;"></p>
+	<p id="error" style="display: none;"></p>
 	<p><button id="oauth" class="button-large">Continue</button> to the app</p>
 	<noscript><h2>Please enable JavaScript or disable your ad blocker</h2></noscript>
 	<br>