diff --git a/web/template/syzoj/problem.php b/web/template/syzoj/problem.php
index c7354ee..644bbd1 100644
--- a/web/template/syzoj/problem.php
+++ b/web/template/syzoj/problem.php
@@ -123,12 +123,12 @@ if ($pr_flag) {
       <div class="column">
         <h4 class="ui top attached block header"><?php echo $MSG_Description ?></h4>
         <div id="description" class="ui bottom attached segment font-content">
-          <span class='md auto_select'>
+          <pre class='md auto_select'>
             <?php
             echo bbcode_to_html($row['description']);
             ?>
 
-          </span>
+          </pre>
         </div>
       </div>
     </div>
@@ -137,14 +137,14 @@ if ($pr_flag) {
         <div class="column">
           <h4 class="ui top attached block header"><?php echo $MSG_Input ?></h4>
           <div id='input' class="ui bottom attached segment font-content">
-            <span class='md auto_select'>
+            <pre class='md auto_select'>
               <?php echo
                 bbcode_to_html(
                   $row['input']
                 );
               ?>
 
-            </span>
+            </pre>
           </div>
         </div>
       </div>
@@ -154,14 +154,14 @@ if ($pr_flag) {
         <div class="column">
           <h4 class="ui top attached block header"><?php echo $MSG_Output ?></h4>
           <div id='output' class="ui bottom attached segment font-content">
-            <span class='md auto_select'>
+            <pre class='md auto_select'>
               <?php echo
                 bbcode_to_html(
                   $row['output']
                 );
               ?>
 
-            </span>
+            </pre>
           </div>
         </div>
       </div>
@@ -211,14 +211,14 @@ if ($pr_flag) {
         <div class="column">
           <h4 class="ui top attached block header"><?php echo $MSG_HINT ?></h4>
           <div id='hint' class="ui bottom attached segment font-content hint">
-            <span class='md auto_select'>
+            <pre class='md auto_select'>
               <?php echo
                 bbcode_to_html(
                   $row['hint']
                 );
               ?>
 
-            </span>
+            </pre>
           </div>
         </div>
       </div>