responsive layout for all devices using bootstrap - 


<div class="jumbotron vertical-center bgpurpletextoffwhite">      <div class="container">         <div class="row">             <div class="col-xs-2 col-sm-5 col-md-5">             </div>             <div class="col-xs-3 col-sm-1 col-md-1">               <img src="./assets/images/pmflogo-transparent.png"/>             </div>             <div class="col-xs-7 col-sm-6 col-md-6">              <br>                 <h3>put me first </h3>             </div>        </div>  </div>

this code. want responsive devices, not behaving responsive @ present. distance between image & text changing resize browser window. want disatnce remain fixed throughout every device/size


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