#testthisone {
  color: rgb(0, 255, 13);
}

.mySlides {
  display: none;
}
.w3-left,
.w3-right,
.w3-badge {
  cursor: pointer;
  font-size: 3rem;
  text-shadow: 0 0 2rem #000;
}
.w3-badge {
  height: 1.5rem;
  width: 1.5rem;
  padding: 0;
  margin: 0.5rem;
}