<div class="block"></div>

.block {
  position: relative;
  margin: 0 auto;
  width: 50%;
  height: 200px;
  background:
    radial-gradient(circle at -30px 50%, transparent 50px, #4caf50 51px) no-repeat padding-box 0 0 / 50% 100%,
    radial-gradient(circle at calc(100% + 30px) 50%, transparent 50px, #4caf50 51px) no-repeat padding-box 100% 0 / 50% 100%,
    radial-gradient(circle at -26px 50%, transparent 46px, #000 47px) no-repeat border-box 0 0 / 50% 100%,
    radial-gradient(circle at calc(100% + 26px) 50%, transparent 46px, #000 47px) no-repeat border-box 100% 0 / 50% 100%;
  border-radius: 15px;
  border: 4px solid transparent;
  filter: drop-shadow(-5px 5px 0 #000);
}