相关疑难解决方法(0)

如何使这个图像响应

HTML:

<section id="first" class="story" data-speed="8" data-type="background">
    <div class="smashinglogo" id="welcomeimg" data-type="sprite" data-offsetY="100" data-Xposition="50%" data-speed="-2"></div>
</section>

CSS:

#first .smashinglogo {background: url(../images/logo1.png)  50% 100px no-repeat fixed;}

如何让div与背景图像响应bootstrap 3？

是否可以在bootstrap 3中使用img-responsive类？

我的div是空的,如下所示:

<div class="row">
    <div class="col-xs-12 col-sm-12 col-md-12 col-lg-12">
        <div class="workflowstep workflowstep1 img-responsive">&nbsp;
        </div>
        <div class="workflowstep workflowstep2 img-responsive">&nbsp;
        </div>
        <div class="workflowstep workflowstep3 img-responsive">&nbsp;
        </div>
        <div class="workflowstep workflowstep4 img-responsive">&nbsp;
        </div>
        <div class="workflowstep workflowstep5 img-responsive">&nbsp;
        </div>
        <div class="workflowstep workflowstep6 img-responsive">&nbsp;
        </div>
    </div>
</div>