According to the docs v4, you are looking for img-thumbnail
(which should be used in img
tag instead of col-*-*
as you have)
Notes:
- In v4
col-xs
was replaced bycol-
- I’ve added
img-fluid
utility class in order to make images responsive
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous"> <div class="container"> <h2>Pictures of Coffee</h2> <div class="row"> <div class="col-lg-4 col-6 "><img class="img-thumbnail img-fluid" src="https://d2lm6fxwu08ot6.cloudfront.net/img-thumbs/960w/04LDEYRW59.jpg" alt=""></div> <div class="col-lg-4 col-6 "><img class="img-thumbnail img-fluid" src="https://d2lm6fxwu08ot6.cloudfront.net/img-thumbs/960w/90V03Q5Y60.jpg" alt=""></div> <div class="col-lg-4 col-6 "><img class="img-thumbnail img-fluid" src="https://d2lm6fxwu08ot6.cloudfront.net/img-thumbs/960w/O83SF2RB6D.jpg" alt=""></div> <div class="col-lg-4 col-6 "><img class="img-thumbnail img-fluid" src="https://d2lm6fxwu08ot6.cloudfront.net/img-thumbs/960w/5JVPSVP7EI.jpg" alt=""></div> <div class="col-lg-4 col-6 "><img class="img-thumbnail img-fluid" src="https://d2lm6fxwu08ot6.cloudfront.net/img-thumbs/960w/C5Y10KIIHA.jpg" alt=""></div> <div class="col-lg-4 col-6 "><img class="img-thumbnail img-fluid" src="https://d2lm6fxwu08ot6.cloudfront.net/img-thumbs/960w/YSSFRY5B25.jpg" alt=""></div> </div> </div>