Bootstrap 4 IE 11 does not work

Question

so I have the problem, that my whole website does not work in IE 11. I don\'t get why because officially IE 11 should be supported by bootstrap 4... Website: www.ergotherapi

Answer 1

I had a display issue using IE11 when using the class .card-deck I fixed this by adding

.card-deck {
    width: 100% !important;
}