If I set width and height using css (width:100%; height:100%), image will be stretched, and It looks ugly. How to Fill images without stretching? What is more, how to make vertical and horizontal center?
Using only HTML and CSS:
HTML
<div class="fill"></div>
CSS
.fill {
overflow: hidden;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
background-size: cover;
background-position: center;
background-image: url('path/to/image.jpg');
}