width: 250px;
height: 100px;
position: relative;
background: radial-gradient(circle at 0 50px, transparent 10px, #28a4f2 0) top left / 60px 49% no-repeat,
radial-gradient(circle at 0 top, transparent 10px, #28a4f2 0) bottom left / 60px 51% no-repeat, radial-
gradient(circle at right 50px, transparent 10px, #eeeeee 0) top right / 190px 51% no-repeat, radial-
gradient(circle at right top, transparent 10px, #eeeeee 0) bottom right / 190px 51% no-repeat;
filter: drop-shadow(3px 3px 3px rgba(0, 0, 0, 0.3));
卡劵.jpg
