bootstrap image preview code example

Example 1: bootstrap Image thumbnails

In addition to our border-radius utilities, you can use 
.img-thumbnail to give an image a rounded 1px border appearance.

<img src="..." alt="..." class="img-thumbnail">

Example 2: bootstrap profile picture

<img src="..." alt="..." class="img-thumbnail">

Example 3: bootstrap img src

<img src="..." class="rounded mx-auto d-block" alt="...">

Example 4: bootstrap image size

.food1 img {
    width:100%;
    height: 230px;
}