/*满天星*/
audio{
    z-index: 5;
    position: absolute;
    bottom: 0;
    opacity: 0.1;
    -webkit-transition: all 2s;
    -moz-transition: all 2s;
    -ms-transition: all 2s;
    -o-transition: all 2s;
    transition: all 2s;
}
audio:hover{
    opacity: 1;
}
.wall{
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
}

div#midground{
    background: url("../images/midground.png");
    z-index: -1;
    -webkit-animation: cc 100s linear infinite;
    -moz-animation: cc 100s linear infinite;
    -o-animation: cc 100s linear infinite;
    animation: cc 100s linear infinite;
}
div#foreground{
    background: url("../images/foreground.png");
    z-index: -2;
    -webkit-animation: cc 153s linear infinite;
    -o-animation: cc 153s linear infinite;
    -moz-animation: cc 153s linear infinite;
    animation: cc 153s linear infinite;
}
div#top{
    background: url("../images/midground.png");
    z-index: -4;
    -webkit-animation: dd 100s linear infinite;
    -o-animation: dd 100s linear infinite;
    animation: da 100s linear infinite;
}
@-webkit-keyframes cc {
    from{
        background-position: 0 0;
        transform: translateY(10px);
    }
    to{
        background-position: 600% 0;
    }
}
@-o-keyframes cc {
    from{
        background-position: 0 0;
        transform: translateY(10px);
    }
    to{
        background-position: 600% 0;
    }
}
@-moz-keyframes cc {
    from{
        background-position: 0 0;
        transform: translateY(10px);
    }
    to{
        background-position: 600% 0;
    }
}
@keyframes cc {
    0%{
        background-position: 0 0;
    }
    100%{
        background-position: 600% 0;
    }
}

@keyframes da {
    0%{
        background-position: 0 0;
    }
    100%{
        background-position: 0 600%;
    }
}
@-webkit-keyframes da {
    0%{
        background-position: 0 0;
    }
    100%{
        background-position: 0 600%;
    }
}
@-moz-keyframes da {
    0%{
        background-position: 0 0;
    }
    100%{
        background-position: 0 600%;
    }
}
@-ms-keyframes da {
    0%{
        background-position: 0 0;
    }
    100%{
        background-position: 0 600%;
    }
}

.tab_tit {
  position: relative;
  
  background: skyblue;
  font-size: 17px;
  font-weight: 500;
  color: #fff;
  /* border: 3px solid skyblue; */
  border-radius: 8px;
  box-shadow: 0 0 0 #fec1958c;
  transition: all .3s ease-in-out;
  cursor: pointer;
}

.star-1 {
	opacity: 0;
  position: absolute;
  top: 20%;
  left: 20%;
  width: 25px;
  height: auto;
  filter: drop-shadow(0 0 0 #fffdef);
  z-index: -5;
  transition: all 1s cubic-bezier(0.05, 0.83, 0.43, 0.96);
}

.star-2 {
	opacity: 0;
  position: absolute;
  top: 45%;
  left: 45%;
  width: 15px;
  height: auto;
  filter: drop-shadow(0 0 0 #fffdef);
  z-index: -5;
  transition: all 1s cubic-bezier(0, 0.4, 0, 1.01);
}

.star-3 {
	opacity: 0;
  position: absolute;
  top: 40%;
  left: 40%;
  width: 5px;
  height: auto;
  filter: drop-shadow(0 0 0 #fffdef);
  z-index: -5;
  transition: all 1s cubic-bezier(0, 0.4, 0, 1.01);
}

.star-4 {
	opacity: 0;
  position: absolute;
  top: 20%;
  left: 40%;
  width: 8px;
  height: auto;
  filter: drop-shadow(0 0 0 #fffdef);
  z-index: -5;
  transition: all .8s cubic-bezier(0, 0.4, 0, 1.01);
}

.star-5 {
	opacity: 0;
  position: absolute;
  top: 25%;
  left: 45%;
  width: 15px;
  height: auto;
  filter: drop-shadow(0 0 0 #fffdef);
  z-index: -5;
  transition: all .6s cubic-bezier(0, 0.4, 0, 1.01);
}

.star-6 {
	opacity: 0;
  position: absolute;
  top: 5%;
  left: 50%;
  width: 5px;
  height: auto;
  filter: drop-shadow(0 0 0 #fffdef);
  z-index: -5;
  transition: all .8s ease;
}



.tab_tit:hover .star-1 {
	opacity: 1;
  position: absolute;
  top: -60%;
  left: -13%;
  width: 25px;
  height: auto;
  filter: drop-shadow(0 0 10px #fffdef);
  z-index: 2;
}

.tab_tit:hover .star-2 {
	opacity: 1;
  position: absolute;
  top: -25%;
  left: 10%;
  width: 15px;
  height: auto;
  filter: drop-shadow(0 0 10px #fffdef);
  z-index: 2;
}

.tab_tit:hover .star-3 {
	opacity: 1;
  position: absolute;
  top: 55%;
  left: 25%;
  width: 5px;
  height: auto;
  filter: drop-shadow(0 0 10px #fffdef);
  z-index: 2;
}

.tab_tit:hover .star-4 {
	opacity: 1;
  position: absolute;
  top: 30%;
  left: 80%;
  width: 8px;
  height: auto;
  filter: drop-shadow(0 0 10px #fffdef);
  z-index: 2;
}

.tab_tit:hover .star-5 {
	opacity: 1;
  position: absolute;
  top: 25%;
  left: 115%;
  width: 15px;
  height: auto;
  filter: drop-shadow(0 0 10px #fffdef);
  z-index: 2;
}

.tab_tit:hover .star-6 {
	opacity: 1;
  position: absolute;
  top: 5%;
  left: 60%;
  width: 5px;
  height: auto;
  filter: drop-shadow(0 0 10px #fffdef);
  z-index: 2;
}

.fil0 {
  fill: #a2e4ff;
}