diff --git a/app/main.py b/app/main.py
index 5aefb77..9f5df69 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1,7 +1,6 @@
 # Flask app main file.
 
 from flask import Flask, render_template, redirect, session, g, flash, request, send_from_directory
-from flask_caching import Cache
 
 from functools import wraps
 from datetime import timedelta
@@ -18,18 +17,6 @@
 
 app = Flask(__name__)
 
-# Cache setup
-'''
-config = {
-    "DEBUG": False,
-    "CACHE_TYPE": "SimpleCache",
-    "CACHE_DEFAULT_TIMEOUT": 60
-}
-
-app.config.from_mapping(config)
-cache = Cache(app)
-'''
-
 # Get secret key from environment variables, stop if not found.
 secret_key = os.environ.get("FLASK_SECRET_KEY")
 if secret_key is None:
diff --git a/app/static/css/style.css b/app/static/css/style.css
index 2a527d2..1513ca8 100644
--- a/app/static/css/style.css
+++ b/app/static/css/style.css
@@ -313,9 +313,6 @@ a:visited {
     padding-right: 1em;
 }
 
-.participation .button {
-}
-
 #add_participation {
     margin: 0.7em 0 0 2em;
 }
@@ -510,6 +507,10 @@ padding: 10px;
         display: inline;
         margin-right: 1em;
     }
+
+    .only_mobi {
+        display: none;
+    }
     
 }
 
diff --git a/app/templates/challenge.html b/app/templates/challenge.html
index 758f100..71a9861 100644
--- a/app/templates/challenge.html
+++ b/app/templates/challenge.html
@@ -15,7 +15,14 @@ <h2>Osallistumiseni tähän haasteeseen</h2>
         {{ html["participations_html"]|safe }}
     </div>
 
+    <ul class="only_mobi">
+        <li>
+            <a href="#challenge_participants">Hyppää osallistujaluetteloon</a>
+        </li>
+    </ul>
+
     <div id="challenge_results_container">
+
         <div id="challenge_species">
             <h2>Havaitut lajit</h2>
             {{ html["taxa_html"]|safe }}