.constelacao, .noite {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
}

.estrela {
    background-color: white;
    border-radius: 50%;
    position: absolute;
    animation-name: estrela;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    filter: blur(1.7px);
    z-index: 1;
}

.estrela.style1 { animation-duration: 4s; animation-name: estrela; }
.estrela.style2 { animation-duration: 6s; animation-name: estrela; }
.estrela.style3 { animation-duration: 80s; animation-name: estrela; }
.estrela.style4 { animation-duration: 10s; animation-name: estrelaDestacada; }

.estrela.tam1 { width: 2px; height: 2px; }
.estrela.tam2 { width: 3px; height: 3px; }
.estrela.tam3 { width: 6px; height: 6px; }

.estrela.opacity1 { opacity:  1; }
.estrela.opacity2 { opacity: .5; }
.estrela.opacity3 { opacity: .1; }

.meteoro {
    position: absolute;
    background-color: #fff;
    width: 2px;
    height: 2px;
    border-radius: 50%;
    transform: rotate(-35deg);
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    animation-duration: 1s;
}

.meteoro:before {
    content: "";
    display: inline-block;
    vertical-align: middle;
    margin-right: 10px;
    width: 0;
    height: 0;
    border-top: 1px solid transparent;
    border-bottom: 1px solid transparent;
    border-left: 85px solid white;
    position: absolute;
    left: 2px;
    top: 0;
}

.meteoro.style1 { animation-name: meteoroStyle1; }
.meteoro.style2 { animation-name: meteoroStyle2; }
.meteoro.style3 { animation-name: meteoroStyle3; }
.meteoro.style4 { animation-name: meteoroStyle4; }

@keyframes escurecer {
    0%   { top: 0; }
    100% { top: 100%; }
}

@keyframes estrela {
0% {
    box-shadow: 0 0 10px 0px rgba(255, 255, 255, 0.05);
}
50% {
    box-shadow: 0 0 10px 2px rgba(255, 255, 255, 0.4);
}
100% {
    box-shadow: 0 0 10px 0px rgba(255, 255, 255, 0.05);
}
}

@keyframes estrelaDestacada {
0% {
    background-color: #FFFFFF;
    box-shadow: 0 0 10px 0px rgba(255, 255, 255, 1);
}
20% {
    background-color: #FFC4C4;
    box-shadow: 0 0 10px 0px rgb(255, 196, 196, 1);
}
80% {
    background-color: #C4CFFF;
    box-shadow: 0 0 10px 0px rgb(196, 207, 255, 1);
}
100% {
    background-color: #FFFFFF;
    box-shadow: 0 0 10px 0px rgba(255, 255, 255, 0.2);
}
}

@keyframes meteoroStyle1 {
    0% { opacity: 0; right: 300px; top: 100px; }
    30% { opacity: .3; }
    60% { opacity: .3; }
    100% { opacity: 0; right: 1000px; top: 600px; }
}

@keyframes meteoroStyle2 {
    0% { opacity: 0; right: 700px; top: 100px; }
    30% { opacity: 1; }
    60% { opacity: 1; }
    100% { opacity: 0; right: 1400px; top: 600px; }
}

@keyframes meteoroStyle3 {
    0% { opacity: 0; right: 300px; top: 300px; }
    30% { opacity: 1; }
    60% { opacity: 1; }
    100% { opacity: 0; right: 1000px; top: 800px; }
}

@keyframes meteoroStyle4 {
    0% { opacity: 0; right: 700px; top: 300px; }
    30% { opacity: 1; }
    60% { opacity: 1; }
    100% { opacity: 0; right: 1400px; top: 800px; }
}

@keyframes lua {
0%{
    box-shadow: 0 0 160px 0px #fff, 0 0 30px -4px #fff, 0 0 8px 2px rgba(255, 255, 255, 0.26);
}
50% {
    box-shadow: 0 0 80px 0px #fff, 0 0 30px -4px #fff, 0 0 8px 2px rgba(255, 255, 255, 0.26);
}
100% {
    box-shadow: 0 0 160px 0px #fff, 0 0 30px -4px #fff, 0 0 8px 2px rgba(255, 255, 255, 0.26);
}
}