fix bug

app/templates/exercise_export/exercise_user.html.erb

@@ -21,8 +21,8 @@
       <div class="ex-scores pd10 text-gray fs13">
         <p class="clearfix">
           <% if @exercise_single_ques_count > 0 %>
-            <span class="mr15">单选题<span class="mlr5"><%= @exercise_single_ques_count %></span>题,
-            共<span class="mlr5"><%= @exercise_single_ques_scores %></span>分</span>
+        <span class="mr15">单选题<span class="mlr5"><%= @exercise_single_ques_count %></span>题,
+        共<span class="mlr5"><%= @exercise_single_ques_scores %></span>分</span>
           <% end %>
           <% if @exercise_double_ques_count > 0 %>
         <span class="mr15">多选题<span class="mlr5"><%= @exercise_double_ques_count %></span>题,
@@ -55,6 +55,7 @@
         </p>
       </div>
     </div>
+    <div class="clearfix"></div>
     <div class="mbt10">
       <% if @ex_obj_array.size > 0 %>
         <div>
@@ -176,15 +177,17 @@
                 <% end %>
               </div>
             </div>
+            <div class="clearfix"></div>
             <div class="pbt5">
               <% if q_type ==  0 %>
                 <% q.exercise_choices.each do |s| %>
                   <% check_answer = (user_answer.present? && (s.id == user_answer.first.exercise_choice_id)) ? "choose-answer" : '' %>
-                  <div class="pbt10 clearfix main-choice">
+                  <div class="pbt10 main-choice">
                     <span class="choose-radio <%= check_answer %> pull-left mt10"></span>
                     <span class="inline-block pull-left ml10 choice-text mt-2"><%= to_markdown(s.choice_text,@request_url) %></span>
                   </div>
                 <% end %>
+                <div class="clearfix"></div>
               <% elsif q_type == 1 %>
                 <% q.exercise_choices.each do |s| %>
                   <% check_answer = (user_answer.present? && (user_answer.pluck(:exercise_choice_id).include?(s.id))) ? true : false %>
@@ -197,6 +200,7 @@
                     <span class="inline-block pull-left choice-text ml10 mt-2"><%= to_markdown(s.choice_text,@request_url) %></span>
                   </div>
                 <% end %>
+                <div class="clearfix"></div>
               <% elsif q_type == 2 %>
                 <div class="pbt5 clearfix">
                   <% q.exercise_choices.each do |s| %>
@@ -211,6 +215,7 @@
                     </span>
                   <% end %>
                 </div>
+                <div class="clearfix"></div>
               <% elsif q_type == 3 %>
                 <% st_counts = q.exercise_standard_answers.pluck(:exercise_choice_id).uniq %>
                 <% st_counts.each_with_index do |s,index| %>
@@ -223,14 +228,16 @@
                     <span class="pull-left line-34">答案（填空<%= index+1 %>）：</span>
                     <span class="null-answer pull-left"><%= to_markdown(check_answer,@request_url) %></span>
                   </div>
+                  <div class="clearfix"></div>
                 <% end %>
               <% elsif q_type == 4 %>
                 <% check_answer = (user_answer.present?  ? user_answer.first.answer_text : '--') %>
-                <div class="flex-nowrap clearfix">
+                <div class="flex-nowrap">
                   <div class="null-answer main-height">
                     <%= to_markdown(check_answer,@request_url) %>
                   </div>
                 </div>
+                <div class="clearfix"></div>
               <% else %>
                 <div class="mbt10">
                   <p class="text-gray mbt10">
@@ -327,6 +334,7 @@
                     </div>
                   <% end %>
                 </div>
+                <div class="clearfix"></div>
               <% end %>
             </div>
           </div>