style:
.loding {
width: 100%;
height: 100%;
}
.bg{
width: 100%;
height: 100%;
margin: 0;
overflow: hidden;
background: #000；
position: relative;
z-index: 999;
}
#stars {
margin: 0 auto;
max-width: 1600px;
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
z-index: 2;
}
.star {
display: block;
width: 1px;
background: transparent;
position: relative;
opacity: 0;
/*过渡动画*/
animation: star-fall 3s linear infinite;
-webkit-animation: star-fall 3s linear infinite;
-moz-animation: star-fall 3s linear infinite;
}
.star:after {
content: '';
display: block;
border: 0px solid #fff;
border-width: 0px 90px 2px 90px;
border-color: transparent transparent transparent rgba(255, 255, 255, 1);
box-shadow: 0 0 1px 0 rgba(255, 255, 255, .1);
/*变形*/
transform: rotate(-45deg) translate3d(1px, 3px, 0);
-webkit-transform: rotate(-45deg) translate3d(1px, 3px, 0);
-moz-transform: rotate(-45deg) translate3d(1px, 3px, 0);
transform-origin: 0% 100%;
-webkit-transform-origin: 0% 100%;
-moz-transform-origin: 0% 100%;
}
@keyframes star-fall {
0% {
opacity: 0;
transform: scale(0.5) translate3d(0, 0, 0);
-webkit-transform: scale(0.5) translate3d(0, 0, 0);
-moz-transform: scale(0.5) translate3d(0, 0, 0);
}
50% {
opacity: 1;
transform: translate3d(-200px, 200px, 0);
-webkit-transform: translate3d(-200px, 200px, 0);
-moz-transform: translate3d(-200px, 200px, 0);
}
100% {
opacity: 0;
transform: scale(1.2) translate3d(-300px, 300px, 0);
-webkit-transform: scale(1.2) translate3d(-300px, 300px, 0);
-moz-transform: scale(1.2) translate3d(-300px, 300px, 0);
}
}
body: