Gallery images with bootstrap4 Flexbox

<!DOCTYPE html>
<html>
<head>
  <title>Gallery images with bootstrap4 Flexbox | par NGLESSON</title>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <meta name="author" content="Mezgani said">
  <meta name="copyright" content="NGLESSON">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
  <link rel="stylesheet" href="style.css">
</head>
<body>
  <div class="container-fluid">
    <div class="d-flex flex-row flex-wrap justify-content-center">
        <div class="d-flex flex-column">
            <img src="https://images.unsplash.com/photo-1485963631004-f2f00b1d6606?auto=format&fit=crop&w=668&q=80" class="img-fluid">            
            <img src="https://images.unsplash.com/photo-1502865787650-3f8318917153?auto=format&fit=crop&w=334&q=80" class="img-fluid">
        </div>
        <div class="d-flex flex-column">
            <img src="https://images.unsplash.com/photo-1500816558239-6b91f4256ead?auto=format&fit=crop&w=331&q=80" class="img-fluid">
            <img src="https://images.unsplash.com/photo-1487376318617-f43c7b41e2e2?auto=format&fit=crop&w=750&q=80" class="img-fluid scale">
        </div>
        <div class="d-flex flex-column">
            <img src="https://images.unsplash.com/photo-1497888329096-51c27beff665?auto=format&fit=crop&w=751&q=80" class="img-fluid scale mb-2">
            <img src="https://images.unsplash.com/photo-1505253468034-514d2507d914?auto=format&fit=crop&w=334&q=80"  class="img-fluid">
        </div>
        <div class="d-flex flex-column">
            <img src="https://images.unsplash.com/photo-1502550900787-e956c314a221?auto=format&fit=crop&w=334&q=80" class="img-fluid m-1 p-1">
              <img src="https://images.unsplash.com/photo-1455853659719-4b521eebc76d?auto=format&fit=crop&w=750&q=80" class="img-fluid image m-1 p-1">
        </div>
    </div>
  </div>
</body>
</html>
.container {
  background: #f9f9f9;
}

.flex-column {
  max-width: 260px;
}

img {
  margin: 5px;
}

.scale {
  transform: scaleY(1.05);
  padding-top: 5px; 
}

                                    
input radio checkbox b4 style

input radio checkbox b4 style

Transitions Animations SVG Style01

Transitions Animations SVG Style01

SwiperJS style01

SwiperJS style01

Simple Table With UIKIT

Simple Table With UIKIT

Scroll down button 01

Scroll down button 01

Responsive image grid

Responsive image grid

Planète animée style01

Planète animée style01

Page construction avec compte à rebours style01

Page construction avec compte à rebours style01

Image hover 01

Image hover 01

Form Création de compte

Form Création de compte

Css Page grid layout

Css Page grid layout

Compteur avec b4

Compteur avec b4