Image in boxes is not making correct responsive - css

Question

I am trying to put 3 images into 3 boxes.Here I have used bootstrap v3.1.1, here the problem is image is not centering correctly.My medium device output like bellow image
Here no any problem for medium device but the problem is in small device this is looking like bellow image
Here image is not cantering.
I have add bellow html code and a css code
<div class="container">
<div class="row">
<div class="col-md-12 col-sm-12">
<!--------------------------->
<div class="main-box">
<div class="box" >
<div class="box1 box sides-hz-2">
<img src="images/sss.png" class="img-responsive"></img>
<div class="list1">
<li class="header1"><Strong>Select</Strong>
</li>
</div>
</div>
<div class="box1 box sides-hz-2">
<img src="images/uuu.png" class="img-responsive"></img>
<div class="list1" style="background:#8C7E63;">
<li class="header1"><Strong>Online</Strong>
</li>
</div>
</div>
<div class="box1 box sides-hz-2">
<img src="images/uuu.png" class="img-responsive"></img>
<div class="list1">
<li class="header1"><Strong>Import</Strong>
</li>
</div>
</div>
</div>
<!--------------------------->
</div>
</div> <!--end of grid -->
</div> <!----end of row ------->
</div> <!----end of continer ------->
Here my own css for image
div.box1 img
{
display:block;
margin-left:25%;
}
May anybody help me for fix this problem ?

Answer 1

You must make the image responsive by adding these properties to img class
.responsive-image{
height:auto;
width:100%;
}
Auto height makes sure of resizing image without losing the aspect ratio
If you are using bootstrap, it has class img-responsive which will take care of responsiveness of the image.
Tip : On resize the image tend to resize and shrink. To make it look nice you can add class center-block to keep the image in center of outer div :-)