In bootstrap how do I make my card div responsive? - html

Question

The section I am doing is just 6 cards, 3 cards in a row of 2. When the screen goes to small (mobile phone size) I want each card just to be on their own row. Each card showing one by one as the user scrolls.
It functions this way when I resize the screen however, when I go to google tools, it does not show my desired outcome.
.row {
padding: 4rem;
background-color: #F8F8FF;
border: 4px black;
colour: red;
}
.card {
background-color: #ddf;
padding: 30px;
margin: 20px;
transition: 0.40s;
}
.card:hover {
transform: scale(1.05);
}
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap#5.2.2/dist/css/bootstrap.min.css" integrity="sha384-Zenh87qX5JnK2Jl0vWa8Ck2rdkQ2Bzep5IDxbcnCeuOxjzrPF/et3URy9Bv1WTRi" crossorigin="anonymous">
<div class="container ">
<h1 class="display-4">My Projects/Work</h1>
<div class="row g-3">
<div class="col-12 col-md-6 col-lg-4">
<div class="card" id="proj1">
<img src="https://via.placeholder.com/300x200" class="card-img-top" alt="project_1" />
<div class="card-body">
<h5 class="card-title">Blog Project</h5>
<p class="card-text">
A simple blog website which I made from scratch using html , css and javascript for the frontend.The backend was done with Django and SQL.
</p>
Click to see
</div>
</div>
</div>
<div class="col-12 col-md-6 col-lg-4">
<div class="card" id="proj2">
<img src="https://via.placeholder.com/300x200" class="card-img-top" alt="project_2" />
<div class="card-body">
<h5 class="card-title">Social media clone </h5>
<p class="card-text">
A social media clone with all the main features of a social media site such as Facebook.In order to achieve this I used Django and React.
</p>
Click to see
</div>
</div>
</div>
<div class="col-12 col-md-6 col-lg-4">
<div class="card" id="proj3">
<img src="https://via.placeholder.com/300x200" class="card-img-top" alt="project_3" />
<div class="card-body">
<h5 class="card-title">E-commence site</h5>
<p class="card-text">
This is a website I build for a small tech company in my local area that specialized in databases .
</p>
Click to see
</div>
</div>
</div>
</div>

Answer 1

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap#5.2.2/dist/css/bootstrap.min.css" integrity="sha384-Zenh87qX5JnK2Jl0vWa8Ck2rdkQ2Bzep5IDxbcnCeuOxjzrPF/et3URy9Bv1WTRi" crossorigin="anonymous">
<div class="container">
<div class="row">
<div class="col-12 col-md-6 col-lg-4">
<div class="card">
<div class="card-body">
<h5 class="card-title">Card title</h5>
<p class="card-text">Some quick example text.</p>
</div>
</div>
</div>
<div class="col-12 col-md-6 col-lg-4">
<div class="card">
<div class="card-body">
<h5 class="card-title">Card title</h5>
<p class="card-text">Some quick example text.</p>
</div>
</div>
</div>
<div class="col-12 col-md-6 col-lg-4">
<div class="card">
<div class="card-body">
<h5 class="card-title">Card title</h5>
<p class="card-text">Some quick example text.</p>
</div>
</div>
</div>
<div class="col-12 col-md-6 col-lg-4">
<div class="card">
<div class="card-body">
<h5 class="card-title">Card title</h5>
<p class="card-text">Some quick example text.</p>
</div>
</div>
</div>
<div class="col-12 col-md-6 col-lg-4">
<div class="card">
<div class="card-body">
<h5 class="card-title">Card title</h5>
<p class="card-text">Some quick example text.</p>
</div>
</div>
</div>
<div class="col-12 col-md-6 col-lg-4">
<div class="card">
<div class="card-body">
<h5 class="card-title">Card title</h5>
<p class="card-text">Some quick example text.</p>
</div>
</div>
</div>
</div>
</div>

Answer 2

You can put classes on "row" or "column" https://getbootstrap.com/docs/4.6/utilities/flex/#align-items
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap#5.2.2/dist/css/bootstrap.min.css" integrity="sha384-Zenh87qX5JnK2Jl0vWa8Ck2rdkQ2Bzep5IDxbcnCeuOxjzrPF/et3URy9Bv1WTRi" crossorigin="anonymous">
<section class="bg-light pt-5 pb-5 shadow-sm">
<div class="container">
<div class="row pt-5">
<div class="col-12">
<h3 class="text-uppercase border-bottom mb-4">Bootstrap Responsive</h3>
</div>
</div>
<div class="row">
<div class="col-lg-4 mb-3 d-flex align-items-stretch">
<div class="card">
<img src="https://via.placeholder.com/300x200" class="card-img-top" alt="Card Image">
<div class="card-body d-flex flex-column">
<h5 class="card-title">Blog Project</h5>
<p class="card-text mb-4">A simple blog website which I made from scratch using html , css and javascript for the frontend.The backend was done with Django and SQL.</p>
Click to see
</div>
</div>
</div>
<div class="col-lg-4 mb-3 d-flex align-items-stretch">
<div class="card">
<img src="https://via.placeholder.com/300x200" class="card-img-top" alt="Card Image">
<div class="card-body d-flex flex-column">
<h5 class="card-title">Blog Project</h5>
<p class="card-text mb-4">A simple blog website which I made from scratch using html , css and javascript for the frontend.The backend was done with Django and SQL.</p>
Click to see
</div>
</div>
</div>
<div class="col-lg-4 mb-3 d-flex align-items-stretch">
<div class="card">
<img src="https://via.placeholder.com/300x200" class="card-img-top" alt="Card Image">
<div class="card-body d-flex flex-column">
<h5 class="card-title">Blog Project</h5>
<p class="card-text mb-4">A simple blog website which I made from scratch using html , css and javascript for the frontend.The backend was done with Django and SQL.</p>
Click to see
</div>
</div>
</div>
</div>
</div>
</section>