.overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.img-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
}

.btn-margin {
  margin-bottom: 30px;
}

.btn-font {
  font-size: 24px;
}

.img-width {
  width: 100%;
}