border-image: url('/media/examples/border-diamonds.png') 30;

border-image: url('/media/examples/border-diamonds.png') 30 / 19px round;

border-image: url('/media/examples/border-diamonds.png') 30 fill / 30px / 30px space;

border-image: linear-gradient(#f6b73c, #4d9f0c) 30;

border-image: repeating-linear-gradient(30deg, #4d9f0c, #9198e5, #4d9f0c 20px) 60;