* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background: #FED75A;
  overflow: hidden;
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
}

.page-title {
  position: fixed;
  top: 30px;
  left: 50%;
  transform: translateX(-50%);
  color: #1C1C1C;
  font-size: 28px;
  font-weight: 300;
  text-align: center;
  z-index: 10;
  text-shadow: 1px 1px 2px rgba(255,255,255,0.5);
}

figure {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  width: 100vw;
}

svg {
  padding: 5vw;
  width: 90vw;
}

svg > * {
  fill: #1C1C1C;
  stroke: #1C1C1C;
  stroke-width: 0.85px;
}

/* 悬停提示 */
body:hover:after {
  content: "悬停以慢速播放";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 1vh;
  color: #1C1C1C;
  text-align: center;
  letter-spacing: 1px;
  font-size: 12px;
  font-weight: 700;
  line-height: 14px;
  -moz-animation: tip 2.5s forwards;
  -webkit-animation: tip 2.5s forwards;
  animation: tip 2.5s forwards;
}

@media screen and (max-width: 50em) {
  .page-title {
    font-size: 20px;
    top: 20px;
  }
}

@-moz-keyframes tip {
  0%, 100% {
    opacity: 0;
  }
  10%, 80% {
    opacity: 1;
  }
}
@-webkit-keyframes tip {
  0%, 100% {
    opacity: 0;
  }
  10%, 80% {
    opacity: 1;
  }
}
@keyframes tip {
  0%, 100% {
    opacity: 0;
  }
  10%, 80% {
    opacity: 1;
  }
}