.my-custom-menu {
  width: 200px;
  border: 1px solid #ccc;
  padding: 0;
  box-shadow: none;
  z-index: 1000;
}

.my-custom-content {
  width: 400px;
  height: 200px;
  background: #fff;
  border: 1px solid #ccc;
  line-height: 200px;
  text-align: center;
  font-size: 20px;
}