Minor tweaks on discussion board

views/discussion.ejs

@@ -47,13 +47,13 @@
   <table class="ui very basic center aligned table">
     <thead>
       <tr>
-        <th class="left aligned" style="width: 40%; ">标题</th>
+        <th class="left aligned" style="width: 45%; ">标题</th>
         <% if (in_problems) { %>
           <th style="width: 20%; ">所属题目</th>
         <% } %>
         <th style="width: 10%; ">作者</th>
         <th style="width: 10%; ">回复数</th>
-        <th style="width: 20%; ">最新回复</th>
+        <th style="width: 15%; ">最新回复</th>
       </tr>
     </thead>
     <tbody>