.header {
  background: url("/images/Sacramento.jpeg") center/cover no-repeat;
  height: 300px;
  position: relative;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
}

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  font-weight: bold;
}

@media (max-width: 600px) {
  .overlay {
    font-size: 24px;
  }
}

.flash {
  animation: flashAnim 0.4s ease-in-out;
}

@keyframes flashAnim {
  0% {
    transform: scale(1);
    color: white;
  }

  50% {
    transform: scale(1.3);
    color: yellow;
  }

  100% {
    transform: scale(1);
    color: white;
  }
}