Make images the same size in bootstrap grid - html

Question

I am creating an image gallery with 3 rows, each containing 3 images by using the Bootstrap grid system. All of the images have different size. What I am trying to do is make all of the images the same size.
I tried to use the max-height or max-width in my CSS, however it didn't help to make all the images (thumbnails) similar size.
Should I just get rid of the thumbnail class or is there any other solution?
body {
padding-top: 70px;}
.row .flex {
display: inline-flex;
width: 100%;}
img {
width:100%;
min-height:100px;}
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<div class="row match-to-row">
<div class="col-lg-4 col-sm-6">
<div class="thumbnail">
<img src="https://source.unsplash.com/eKTUtA74uN0" alt="">
</div>
</div>
<div class="col-lg-4 col-sm-6">
<div class="thumbnail">
<img src="https://source.unsplash.com/x-tbVqkfQCU" alt="">
</div>
</div>
<div class="col-lg-4 col-sm-6">
<div class="thumbnail">
<img src="https://source.unsplash.com/cjpGSEkXfwM" alt="">
</div>
</div>
<div class="row match-to-row">
<div class="col-lg-4 col-sm-6">
<div class="thumbnail">
<img src="https://source.unsplash.com/63JKK67yGUE" alt="">
</div>
</div>
<div class="col-lg-4 col-sm-6">
<div class="thumbnail">
<img src="https://source.unsplash.com/YP6lDrlxWYQ" alt="">
</div>
</div>
<div class="col-lg-4 col-sm-6">
<div class="thumbnail">
<img src="https://source.unsplash.com/NqE8Ral8eCE" alt="">
</div>
</div>
<div class="row flex match-to-row">
<div class="col-lg-4 col-sm-6">
<div class="thumbnail">
<img src="https://source.unsplash.com/6oUsyeYXgTg" alt="">
</div>
</div>
<div class="col-lg-4 col-sm-6">
<div class="thumbnail">
<img src="https://source.unsplash.com/WF2lvywxdMM" alt="">
</div>
</div>
<div class="col-lg-4 col-sm-6">
<div class="thumbnail">
<img src="https://source.unsplash.com/2FdIvx7sy3U" alt="">
</div>
</div>
</div>
</div>

Answer 1

I think the property you're looking for is object-fit
img {
width: 200px; /* You can set the dimensions to whatever you want */
height: 200px;
object-fit: cover;
}
The object-fit property works similarly to how you would using background-size: cover on a background image to make it fill the page without stretching. This way, you can define a width in a rule that all images will follow to ensure that they are the same size without distorting your picture.
Other values you can use with this property includes:
fill - stretch the image.
contain - preserve the aspect ratio of the image.
cover - Fill the height and width of the box.
none - Keep the original size.
scale-down - compare the differences between none and contain to find the smallest object size.
object-fit | CSS-Tricks

Answer 2

Add the css class img-responsive to every image.

Answer 3

just modify this:
img {
width: 100px; // how much you want
min-height: 100px;
float: left;
margin: 10px;
}

Answer 4

Go to "Inspect Element" in your browser and look for something like:
.thumbnail a>img, .thumbnail>img {
display: block;
width: 100%;
height: auto; }
Change it to:
.thumbnail a>img, .thumbnail>img {
display: block;
width: 100%;
height: 300px; //change as per your requirement }

Answer 5

Bootstrap’s grid system uses a series of containers, rows, and columns to layout and align content. Top level, is Container and rows and columns are displayed under it.
In Bootstrap, there are 4 classes
xs (for phones - screens less than 768px wide)
sm (for tablets - screens equal to or greater than 768px wide)
md (for small laptops - screens equal to or greater than 992px wide)
lg (for laptops and desktops - screens equal to or greater than 1200px wide)
How to decide on column display:
A page is divided into 12columns grid and width is calculated as
width: percentage((#columns / #grid-columns));
1 column / 12 grid-columns = 8.33% * 1170px = 97.5px
there are no partial pixels so browsers rounds the number.
col-md-2 - Will display 6 images in a row. 2 means 2 columns to display an image
col-sm-12 - Class will help in stacking the image when opened on small devices
.img-center - Is custom class to defined additional properties for the image box
Hope this helps.
.img-center {
text-align: center;
border-radius: 8px;
width: 100px;
background-color: white;
box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.15), 0 2px 3px 0 rgba(0, 0, 0, 0.1);
}
.row {
display: flex;
margin: auto;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" href="EightImages.css" />
<link rel="images" href="images" />
<link rel="stylesheet" href="css/bootstrap-grid.min.css" />
<link rel="stylesheet" href="css/bootstrap.min.css" />
<title>Document</title>
</head>
<body>
<div class="container">
<div class="row">
<div class="col-sm-12 col-md-2">
<img
class="img-fluid img-center"
src="https://cdn.pixabay.com/photo/2016/09/07/11/37/tropical-1651426__340.jpg"
/>
<p>
Test
</p>
</div>
<div class="col-sm-12 col-md-2">
<img
class="img-fluid img-center"
src="https://cdn.pixabay.com/photo/2016/09/07/11/37/tropical-1651426__340.jpg"
/>
<p>
Test
</p>
</div>
<div class="col-sm-12 col-md-2">
<img
class="img-fluid img-center"
src="https://cdn.pixabay.com/photo/2016/09/07/11/37/tropical-1651426__340.jpg"
/>
<p>
Test
</p>
</div>
<div class="col-sm-12 col-md-2">
<img
class="img-fluid img-center"
src="https://cdn.pixabay.com/photo/2016/09/07/11/37/tropical-1651426__340.jpg"
/>
<p>
Test
</p>
</div>
<div class="col-sm-12 col-md-2">
<img
class="img-fluid img-center"
src="https://cdn.pixabay.com/photo/2016/09/07/11/37/tropical-1651426__340.jpg"
/>
<p>
Test
</p>
</div>
<div class="col-sm-12 col-md-2">
<img
class="img-fluid img-center"
src="https://cdn.pixabay.com/photo/2016/09/07/11/37/tropical-1651426__340.jpg"
/>
<p>
Test
</p>
</div>
<div class="col-sm-12 col-md-2">
<img
class="img-fluid img-center"
src="https://cdn.pixabay.com/photo/2016/09/07/11/37/tropical-1651426__340.jpg"
/>
<p>
Test
</p>
</div>
<div class="col-sm-12 col-md-2">
<img
class="img-fluid img-center"
src="https://cdn.pixabay.com/photo/2016/09/07/11/37/tropical-1651426__340.jpg"
/>
<p>
Test
</p>
</div>
</div>
</div>
<script src="js/bootstrap.min.js"></script>
<script
src="https://code.jquery.com/jquery-3.2.1.slim.min.js"
integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
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</body>
</html>