bootstrap image class code example

Example 1: bootstrap image size

Width 25%
Width 50%
Width 75%
Width 100%

Example 2: bootstrap Image thumbnails

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

Example 3: img-fluid bootstrap

 //This will make your image responsive

Example 4: bootstrap image size

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