diff --git a/public/index.html b/public/index.html
index f443759..4b433fd 100644
--- a/public/index.html
+++ b/public/index.html
@@ -26,7 +26,7 @@
         <fieldset>
             <legend>
                 <strong>Download a Dataset</strong>
-                <button id="info-download-btn" class='info-btn'><i class="fa fa-info" ></i></button>
+                <button id="info-download-btn" class='info-btn'><i class="fa fa-info"></i></button>
             </legend>
 
             <label for="dataset-select">Dataset:</label>
@@ -45,7 +45,7 @@
         <fieldset>
             <legend>
                 <strong>Upload Your Answers</strong>
-                <button id="info-upload-btn" class='info-btn'><i class="fa fa-info" ></i></button>
+                <button id="info-upload-btn" class='info-btn'><i class="fa fa-info"></i></button>
             </legend>
             <label for="answer-cype">Type:</label>
             <select id="answer-cype">
@@ -62,7 +62,7 @@
         <fieldset>
             <legend>
                 <strong>Get status of ongoing process</strong>
-                <button id="info-results-btn" class='info-btn'><i class="fa fa-info" ></i></button>
+                <button id="info-results-btn" class='info-btn'><i class="fa fa-info"></i></button>
             </legend>
             <label for="url">URL:</label>
             <input type="url" id="url" placeholder="https://gym.si.usi.ch:45003/results/XXXX" size=50 required />