javascript - How to adapt images to different resolutions on PC?

Question

Under high resolution

Under low resolution

How to adapt the background image?

Answer 1

background:url(images) center center no-repeat;
background-size:100% 100%;

That’s okay

Answer 2

background-size: 100% 100%;

Answer 3

//Width adaptive

background-size: 100% auto;

//Adaptive

background-size:cover;