Finding issue with col-md and col-sm in bootstrap - html

Question

My agenda is to show an image and Details side by side in laptop and in responsive show them individually.. It works in non-responsive page showing the details side by side with col-md-6, but the code doesnt accept col-sm-12 for showing the details induvidually in responsive state
<section id="about-body">
<div class="container-fluid">
<div class="row">
<div class="col-md-6 col-sm-12 padding-0">
<img class="col-img" src="reference/about-us/choice.jpg" alt="color choices">
</div>
<div class="col-md-6 col-sm-12 padding-0">
<div class="col-details">
<div class="col-details-title">
ABOUT US
</div>
<div class="col-details-subtext">
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maxime eius, itaque odio vel fugiat sit minima illum doloremque qui esse. Minima veniam soluta numquam mollitia vel aspernatur, nobis maxime in!
<br>
<br>
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Nobis amet, alias nam! Cooris doloremque tempora sed facilis eveniet, quis voluptas quaerat accusamus tenetur, laborum debitis consequuntur ad facere beatae. Enim.
</div>
<div>
<button style="margin-left: 250px; margin-top: 50px;">View More</button>
</div>
</div>
</div>
</div>
</div>
</section>

Answer 1

Use img-fluid to image(see Fiddle:https://jsfiddle.net/gpLyvr5w/6/)
Learn here:https://getbootstrap.com/docs/4.0/content/images/
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
<section id="about-body">
<div class="container-fluid">
<div class="row">
<div class="col-md-6 col-sm-12 padding-0">
<img class="img-fluid" src="https://material.angular.io/assets/img/examples/shiba1.jpg" alt="color choices">
</div>
<div class="col-md-6 col-sm-12 padding-0">
<div class="col-details">
<div class="col-details-title">
ABOUT US
</div>
<div class="col-details-subtext">
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maxime eius, itaque odio vel fugiat sit minima illum doloremque qui esse. Minima veniam soluta numquam mollitia vel aspernatur, nobis maxime in!
<br>
<br>
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Nobis amet, alias nam! Cooris doloremque tempora sed facilis eveniet, quis voluptas quaerat accusamus tenetur, laborum debitis consequuntur ad facere beatae. Enim.
</div>
<div>
<button style="margin-left: 250px; margin-top: 50px;">View More</button>
</div>
</div>
</div>
</div>
</div>
</section>

Answer 2

well the code class="col-md-6 col-sm-12 padding-0" means that at screen ≥576px the element should take full width (aka width:100%) of available width but if the screen is ≥768px then the element should take half the available width (aka width:50%).
So if you need your div containing image and div with details to be side by side on screens ≥768px (usually tablets in portrait mode) then simply use col-md-6 you don't need to specify col-sm-12 as by default div elements are block level elements and take full width of available space.
Also you don't need padding-0 class you can use Bootstrap 4's spacing classes such as p-0, p-1, p-3, pt-1, py-3 etc. to remove or add padding so your final classes should look like this:
class="col-md-6 p-0"

Answer 3

You Need to give the extra class in first col-md-6 i have given class name res and write a media query for that like these
<style>
#media only screen and (min-device-width : 320px) and (max-device-width : 480px)
{
.res{
min-width:100%;
}
}
</style>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
<section id="about-body">
<div class="container-fluid">
<div class="row">
<div class="col-md-6 col-sm-12 padding-0 res">
<img class="img-fluid" src="https://material.angular.io/assets/img/examples/shiba1.jpg" alt="color choices">
</div>
<div class="col-md-6 col-sm-12 padding-0">
<div class="col-details">
<div class="col-details-title">
ABOUT US
</div>
<div class="col-details-subtext">
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Maxime eius, itaque odio vel fugiat sit minima illum doloremque qui esse. Minima veniam soluta numquam mollitia vel aspernatur, nobis maxime in!
<br>
<br>
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Nobis amet, alias nam! Cooris doloremque tempora sed facilis eveniet, quis voluptas quaerat accusamus tenetur, laborum debitis consequuntur ad facere beatae. Enim.
</div>
<div>
<button style="margin-left: 250px; margin-top: 50px;">View More</button>
</div>
</div>
</div>
</div>
</div>
</section>

Answer 4

Hi All i have Solved this issue.. had MISSED OUT WITH THE META TAG IN HEADER