@import url("https://fonts.googleapis.com/css?family=Nunito:400,600,700");
@keyframes floating {
  from {
    transform: translateY(0px);
  }
  65% {
    transform: translateY(15px);
  }
  to {
    transform: translateY(0px);
  }
}
*{cursor: url("../images/tb.png"),auto;}
html {
  height: 100%;
}
/*		禁止选中文字*/
body {
  -webkit-user-select: none; /* Chrome, Safari, Opera */
  -moz-user-select: none; /* Firefox */
  -ms-user-select: none; /* Internet Explorer/Edge */
  user-select: none;
}

body {
  background-image: url("../images/star.svg"), linear-gradient(to bottom, #05007A, #4D007D);
  height: 100%;
  margin: 0;
  background-attachment: fixed;
  overflow: hidden;

}

.mars {
  left: 0;
  right: 0;
  bottom: 0;
  position: absolute;
  height: 27vmin;
  background: url("../images/mars.svg") no-repeat bottom center;
  background-size: cover;
  /*图片置于最底层代码*/
  position: absolute;
  z-index: -1;
}
/*		付*/
.logo{
		width: 50px;
		right: 20px;
		top: 20px;
		position: absolute;
		opacity: 0.8
}
/*		404logo*/
.logo-404 {
  position: absolute;
  margin-left: auto;
  margin-right: auto;
  left: 0;
  right: 0;
  top: 16vmin;
  width: 30vmin;
}
@media (max-width: 480px) and (min-width: 320px) {
  .logo-404 {
    top: 45vmin;
  }
}

.meteor {
  position: absolute;
  right: 2vmin;
  top: 16vmin;
}

.title {
  color: white;
  font-family: "Nunito", sans-serif;
  font-weight: 600;
  text-align: center;
  font-size: 5vmin;
  margin-top: 31vmin;
}
@media (max-width: 480px) and (min-width: 320px) {
  .title {
    margin-top: 65vmin;
  }
}

.subtitle {
  color: white;
  font-family: "幼圆", sans-serif;
  font-weight: 400;
  text-align: center;
  font-size: 3.5vmin;
  margin-top: -1vmin;
  margin-bottom: 9vmin;
  font-weight: bold;
}

.btn-back {
  border: 2px solid white;
  color: white;
  height: 5vmin;
  padding: 12px;
  font-family: "Nunito", sans-serif;
  text-decoration: none;
  border-radius: 5px;
	transition: 0.3s
}
.btn-back:hover {
  background: white;
  color: #4D007D;
}
@media (max-width: 480px) and (min-width: 320px) {
  .btn-back {
    font-size: 3.5vmin;
  }
}

.astronaut {
  position: absolute;
  top: 18vmin;
  left: 10vmin;
  height: 30vmin;
  animation: floating 2s infinite ease-in-out;
}
.astronaut:hover{transform: scale(1.3);display: block}
@media (max-width: 480px) and (min-width: 320px) {
  .astronaut {
    top: 5vmin;
  }
}

.spaceship {
  position: absolute;
  bottom: 15vmin;
  right: 24vmin;
}
@media (max-width: 480px) and (min-width: 320px) {
  .spaceship {
    width: 45vmin;
    bottom: 18vmin;
  }
}