看看这个:http: //www.consultacultura.it/portale_comunale_della_cultura.asp？IDcomune = 1
轮播图像不像它下面的图像那样响应.它们具有相同的类img-fluid.
twitter-bootstrap-4 responsive-images bootstrap-4
bootstrap-4 ×1
responsive-images ×1
twitter-bootstrap-4 ×1