html,
body {
  height: 100%;
}

body {
  max-height: 100%;
  background-image: url('1080.png');
  background-size: 100% 100%;
  background-repeat: no-repeat;
}

main {
  height: 100%;
}

.mycontainer {
  display: flex;
  align-items: center;
  flex-direction: column;
  height: 100%;
  width: 100%;
}

.centered-div {
  transform: translateX(-80%);
  margin-top: 19vh;
  margin-left: 0;
  text-align: center;
}

.logo {
  margin-bottom: 4vh;
  height: 20vh;
  width: auto;
}

.centered-div a {
  display: inline-block;
}

.centered-div a img {
  height: 7vh;
}

.centered-div--top {
  margin-bottom: 1vh;
}

.centered-div--bottom {
  text-align: left;
}

.centered-div--bottom a img {
  height: 9vh;
}

/* 移动端样式，放在全局作用域，兼容所有浏览器 */
@media (max-width: 1360px) {
  body {
    background-image: url('bg.png');
  }


  .mycontainer {
    display: flex;
    align-items: center;
    flex-direction: column;
    height: 100%;
    width: 100%;
  }

  .centered-div {
    transform: translateX(0);
    width: 100%;
    margin-top: 5vh;
    margin-left: 0;
    text-align: center;
  }

  .logo {
    margin-bottom: 6vh;
    height: 14vh;
    width: auto;
  }

  .centered-div a {
    display: inline-block;
  }

  .centered-div a img {
    height: 7vh;
  }

  .centered-div--top {
    margin-bottom: 1vh;
  }

  .centered-div--bottom {
    text-align: center;
  }

  .centered-div--bottom a img {
    height: 9vh;
  }
}

/* 移动端样式，放在全局作用域，兼容所有浏览器 */
@media (max-width: 570px) {
  body {
    background-image: url('bg.png');
  }


  .mycontainer {
    display: flex;
    align-items: center;
    flex-direction: column;
    height: 100%;
    width: 100%;
  }

  .centered-div {
    transform: translateX(0);
    width: 100%;
    margin-top: 5vh;
    margin-left: 0;
    text-align: center;
  }

  .logo {
    margin-bottom: 6vh;
    height: 14vh;
    width: auto;
  }

  .centered-div a {
    display: inline-block;
  }

  .centered-div a img {
    height: 5vh;
  }

  .centered-div--top {
    margin-bottom: 1vh;
  }

  .centered-div--bottom {
    text-align: center;
  }

  .centered-div--bottom a img {
    height: 6vh;
  }
}



@media (max-width: 300px) {
  .centered-div--top {
    display: flex;
    justify-content: center;
  }

  .centered-div a {
    width: 44%;
  }

  .centered-div--bottom a {
    width: 67%;
  }

  .centered-div a img {
    width: 100%;
    height: auto;
  }

  .centered-div--bottom a img {
    width: 100%;
    height: auto;
  }
}