* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Homory, HomoryUTF, 'Microsoft YaHei UI', SimHei, Arial, sans-serif;
  font-feature-settings: "tnum" on;
}

a:link, a:visited, a:hover, a:active {
  color: inherit;
  text-decoration: none;
}

body {
  max-width: 100vw;
  min-height: 100vh;
  color: #f0f0f0;
  padding: 20px;
  background: linear-gradient(135deg, #2c3e50, #4a6491, #2c3e50);
}

@keyframes twinkle {
  0%, 100% {
    opacity: 0.2;
  }

  50% {
    opacity: 1;
  }
}

.stars {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.star {
  position: absolute;
  background-color: #fff;
  border-radius: 50%;
  animation: twinkle 4s infinite;
}

@keyframes pulse {
  0% {
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0.6;
  }

  50% {
    transform: translate(-50%, -50%) scale(1.2);
    opacity: 0.2;
  }

  100% {
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0.6;
  }
}