How to manage Bootstrap 4 grids?

Question

I have two side like col-md-6 & col-md-6 and I have six images inside left side and right side. I need only one images like given below code.

This is working fine but I need expand left six column in full width when right side image will not be available. How can I manage this?

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>


<div class="container">
    <div class="row">
    <div class="col-6">
    <div class="row">
      <div class="col-4" style="background-color:yellow;">img</div>
      <div class="col-4" style="background-color:orange;">img</div>
      <div class="col-4" style="background-color:blue;">img</div>
      <div class="col-4" style="background-color:red;">img</div>
      <div class="col-4" style="background-color:lime;">img</div>
      <div class="col-4" style="background-color:indianred;">img</div>
    </div>
      </div>
          <div class="col-6 p-0">
      <div class="col-12" style="background-color:green; height:48px;">img</div>
</div>
    </div>

</div>

I want like as given below code if right col-md-6 will be not available:

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>


<div class="container">
    <div class="row">
    <div class="col-12">
    <div class="row">
      <div class="col-2" style="background-color:yellow;">img</div>
      <div class="col-2" style="background-color:orange;">img</div>
      <div class="col-2" style="background-color:blue;">img</div>
      <div class="col-2" style="background-color:red;">img</div>
      <div class="col-2" style="background-color:lime;">img</div>
      <div class="col-2" style="background-color:indianred;">img</div>
    </div>
      </div>
    </div>

</div>

How can I resolve this?

Answer 1

Replace col-6 with col

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>


<div class="container">
    <div class="row">
    <div class="col">
    <div class="row">
      <div class="col-4" style="background-color:yellow;">img</div>
      <div class="col-4" style="background-color:orange;">img</div>
      <div class="col-4" style="background-color:blue;">img</div>
      <div class="col-4" style="background-color:red;">img</div>
      <div class="col-4" style="background-color:lime;">img</div>
      <div class="col-4" style="background-color:indianred;">img</div>
    </div>
      </div>
          <div class="col p-0">
      <div class="col-12" style="background-color:green; height:48px;">img</div>
</div>
    </div>

</div>