如何使div与背景图像响应？

Question

我想让我网站的以下部分做出回应。

我试图让一个div图像响应，但它没有起作用。

<div class="row">
                   <div class="col-sm-4 main_service main_auto">
                       <h4>
                        <a title="Automotive" href="searchcat1.aspx?cat=Automotive">Automotive</a></h4>
                    <p>
                        <a title="" href="searchsubcat.aspx?cat=Automotive&subcat=Auto Spare Parts">Auto 
                        Spare Parts</a>
                         <a title="" href="searchsubcat.aspx?cat=Automotive&subcat=Commercial Vehicles">
                        Commercial Vehicles</a> 
                         <a title="" href="searchsubcat.aspx?cat=Automotive&subcat=Oil value Lubricants">
                        Oil value Lubricants</a>
                          <a title="" href="searchsubcat.aspx?cat=Automotive&subcat=Tyres and Batteries">
                        Tyres and Batteries</a> 
                          <a title="" href="searchsubcat.aspx?cat=Automotive&subcat=Automotive Tools">
                        Automotive Tools</a> 
                          <span class="right"><a href="searchcat1.aspx?cat=Automotive">more ...</a></span></p>
                   </div>
               </div>

请帮我修改我的代码，因为我是bootstrap的新手。

Answer 1

<div class="row">
                   <div class="col-sm-4 col-xs-12 main_service main_auto">
                       <h4>
                        <a title="Automotive" href="searchcat1.aspx?cat=Automotive">Automotive</a></h4>
                    <p>
                        <a title="" href="searchsubcat.aspx?cat=Automotive&subcat=Auto Spare Parts">Auto 
                        Spare Parts</a>
                         <a title="" href="searchsubcat.aspx?cat=Automotive&subcat=Commercial Vehicles">
                        Commercial Vehicles</a> 
                         <a title="" href="searchsubcat.aspx?cat=Automotive&subcat=Oil value Lubricants">
                        Oil value Lubricants</a>
                          <a title="" href="searchsubcat.aspx?cat=Automotive&subcat=Tyres and Batteries">
                        Tyres and Batteries</a> 
                          <a title="" href="searchsubcat.aspx?cat=Automotive&subcat=Automotive Tools">
                        Automotive Tools</a> 
                          <span class="right"><a href="searchcat1.aspx?cat=Automotive">more ...</a></span></p>
                   </div>
               </div>