coobrder12.4.css

.box {
  position: relative;
  width: 200px;
  height: 200px;
  background-color: black;
  color: white;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: none;
}

.box span {
  position: relative;
  z-index: 1;
}

.box::before,
.box::after {
  content: "";
  position: absolute;
  width: 40px;
  height: 40px;
  border: 4px solid orange;
  pointer-events: none;
}

.box::before {
  top: 0;
  left: 0;
  border-right: none;
  border-bottom: none;
}

.box::after {
  bottom: 0;
  right: 0;
  border-left: none;
  border-top: none;
}