1.
1 <div class="container" > 2 <h1 class="text-center"> {% trans "Product promotion" %} </h1> 3 <br> 4 <hr> 5 <!--<div class="row">--> 6 <div class="col-md-4"> 7 <h4 class="text-center"> {% trans "Unmanned aerial vehicle" %} </h4> 8 <div class="embed-reponsive embed-reponsive-4by3"> 9 <iframe class="embed-responsive-item" src="{% static 'video/shu.mp4' %}"></iframe> 10 </div> 11 </div> 12 <div class="col-md-4"> 13 <h4 class="text-center"> {% trans "3D printer" %} </h4> 14 <div class="embed-reponsive embed-reponsive-4by3"> 15 <iframe class="embed-responsive-item" src="{% static 'video/shu.mp4' %}"></iframe> 16 </div> 17 </div> 18 <div class="col-md-4"> 19 <h4 class="text-center"> {% trans "3D printer" %} </h4> 20 <div class="embed-reponsive embed-reponsive-4by3"> 21 <iframe class="embed-responsive-item" src="{% static 'video/shu.mp4' %}"></iframe> 22 </div> 23 </div> 24 <!--</div>--> 25 </div