I am facing an issue where my cards are not lining up inline next to each other in columns but are instead jumping under each other. I have tried setting the col-md-6 class to align two of them next to each other, but that did not work. I have also checked for any column size issues and tried setting different sizes that add up to 12 columns. The container problem also persists. I am trying to understand what I am doing wrong so I can rectify it in the future. Thank you for any assistance.
<section id="jobs" class="py-5 bg-white">
<div class="container">
<div class="row">
<div class="col text-center">
<h1 class="display-3 text-uppercase text-black mb-0">pozice</h1>
<div class="underline-green bg-green"></div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-6 col-lg-4 my-3">
<div class="card">
<img src="images/assistant.jpg" alt="assistant" class="card-img-top">
<div class="card-body">
<h4 class="card-title text-capitalize">asistentka</h4>
<p class="card-text">
<h5 class="text-grey font-weight-light pb-3 pt-1">Do našeho kolektivu hledáme kolegyni na pozici asistentky. Možná hledáme právě vás!</h5>
<a href="" class="btn btn-green mt-5">
<h6 class="btn-text text-white pt-1 px-4">Zjistit více</h6>
</a>
</p>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-6 col-lg-4 my-3">
<div class="card">
<img src="images/developer.jpg" alt="developer" class="card-img-top">
<div class="card-body">
<h4 class="card-title text-capitalize">developer</h4>
<p class="card-text">
<h5 class="text-grey font-weight-light pb-3 pt-1">Do našeho kolektivu hledáme kolegyni na pozici asistentky. Možná hledáme právě vás!</h5>
<a href="" class="btn btn-green mt-5">
<h6 class="btn-text text-white pt-1 px-4">Zjistit více</h6>
</a>
</p>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-md-6 col-lg-4 my-3">
<div class="card">
<img src="images/advertiser.jpg" alt="advertiser" class="card-img-top">
<div class="card-body">
<h4 class="card-title text-capitalize">obchodník</h4>
<p class="card-text">
<h5 class="text-grey font-weight-light pb-3 pt-1">Do našeho kolektivu hledáme kolegyni na pozici asistentky. Možná hledáme právě vás!</h5>
<a href="" class="btn btn-green mt-5">
<h6 class="btn-text text-white pt-1 px-4">Zjistit více</h6>
</a>
</p>
</div>
</div>
</div>
</div>
</section>