html,
body {
  height: 100%;
  margin: 0px;
  padding: 0px;
}
.layout {
  width: 100%;
  margin: 0px auto;
  height: 100vh;
  background-size: cover;
  background-position: center; /* 可选，通常设置为居中 */
  background-repeat: no-repeat; /* 可选，防止图片重复 */
  background-image: url(../img/bg.png);
}
.layout .main {
  width: 100%;
  height: 100%;
  margin: 0px;
  display: grid;
  place-items: center;
}

.layout .main .star {
  display: block;
  text-align: center;
  cursor: pointer;
  border-radius: 5px;
  outline: none;
  border: none;
  font-size: 14px;
  line-height: 30px;
  height: 30px;
  width: 186px;
  color: #fff;
  border-width: 1px;
  letter-spacing: 5px;
  border-style: solid;
  margin-right: 20px;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  -ms-border-radius: 5px;
  -o-border-radius: 5px;
}
.layout .main .star:hover,
.layout .main a:hover {
  border-width: 2px;
  border-color: #00bbee;
  background-color: #fff;
  opacity: 0.8;
  font-size: 16px;
  color: #00bbee;
}
.layout .footer {
  position: fixed;
  bottom: 10px;
  font-size: 12px;
  color: #666;
  text-align: center;
  width: 100%;
}
.layout .footer .copyright {
  margin: 0px auto;
}