*{
  box-sizing: border-box;
}

html,
body{
  font-family: '得意黑', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  color: white;
  margin: 0;
  background: #333;
  overflow: hidden;
}

.landing{
  position: relative;
  height: 100vh;
  background-image: url(./bg.jpg);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
}

.landing-inner{
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.7);
  text-align: center;
  padding-top: 40px;
}

.landing .landing-inner img{
  width: 200px;
  height: 200px;
  user-select: none;
}
.landing .landing-inner h1{
  font-size: 3rem;
}
.landing .landing-inner h2{
  font-size: 2.3rem;
}

.landing .landing-inner p{
  font-size: 1.2rem;
  text-align: center;
}
.landing .landing-inner .countdown{
  width: 100%;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: center;
}
.landing .landing-inner .countdown div{
  width: 160px;
  padding: 20px 2rem;
  border: 1px solid #fff;
  border-radius: 10px;
  margin: 5px;
  opacity: 0.7;
  background: #000;
}
.landing .landing-inner .countdown div:first-child{
  background: #17a2b8;
}
.landing .landing-inner .countdown div span{
  display: block;
  font-size: 25px;
}


@media(max-width: 650px){
  .landing .landing-inner img{
    width: 70%;
  }
  .landing .landing-inner h1{
    font-size: 1.5rem;
    display:none;
  }
  .landing .landing-inner h2{
    font-size: 1.2rem;
  }
  .landing .countdown{
    flex-direction: column;
  }
  .landing .landing-inner .countdown div{
    font-size: 2rem;
    /* display: none; */
    width: 80%;
  }
  .landing .landing-inner .countdown div span{
    font-size: 1rem;
  }
}

/* setting */
.setting{
  background: #fff;
  position: absolute;
  top: 0;
  left: 0;
  color: #17a2b8;
  transition: all 2s ease-in-out 1s;
}
.setting .title{
  padding: 0.5rem;
  cursor: pointer;
  user-select: none;
}
.setting .setting-body{
  padding: 2rem;
  display: none;
}
.setting .setting-body div:not(:last-child){
  margin-bottom: 10px;
}
.setting .setting-body div input{
  width: 100px;
  font-size: 1.2rem;
  padding: 4px 10px;
  color: #444;
  outline-color: #17a2b8;
}
.setting .setting-body div button{
  padding: 4px 10px;
  outline-color: #17a2b8;
  color: #17a2b8;
}

@media(max-height: 650px){
  img{
    width: 20%;
  }
  .landing .landing-inner p{
    display: none;
  }
}
@media(max-height: 400px){
  img{
    padding-bottom: 30px;
    width: 100px;
    height: 100px;
  }
  h1{
    display: none
  }
  .countdown{
    padding-bottom: 20px;
  }
}