星星的制作

<div class="dark">
    <div class="stars"></div>
    <div class="stars2"></div>
</div>

.stars2 {
     2px;
    height: 2px;
    background: transparent;
    box-shadow: 1582px 505px #FFF, 145px 218px #FFF, 1197px 71px #FFF, 489px 591px #FFF, 1870px 1796px #FFF, 1441px 873px #FFF, 1079px 1809px #FFF, 165px 704px #FFF, 766px 1143px #FFF, 24px 372px #FFF, 882px 1621px #FFF, 956px 427px #FFF, 1368px 887px #FFF, 1683px 109px #FFF, 51px 960px #FFF, 105px 1975px #FFF, 1245px 1657px #FFF, 788px 515px #FFF, 451px 1801px #FFF, 878px 1058px #FFF, 679px 1700px #FFF, 450px 1282px #FFF, 532px 393px #FFF, 1570px 1847px #FFF, 842px 1581px #FFF, 491px 951px #FFF, 858px 1999px #FFF, 1808px 1559px #FFF, 1279px 961px #FFF, 1106px 1069px #FFF, 73px 41px #FFF, 399px 1162px #FFF, 1149px 1824px #FFF, 1332px 823px #FFF, 341px 283px #FFF, 935px 1253px #FFF, 336px 1657px #FFF, 1136px 529px #FFF, 569px 1411px #FFF, 1849px 349px #FFF, 405px 1348px #FFF, 1511px 494px #FFF, 1662px 753px #FFF, 783px 1795px #FFF, 678px 1077px #FFF, 1073px 142px #FFF, 1942px 1917px #FFF, 1699px 1835px #FFF, 983px 1672px #FFF, 1549px 482px #FFF, 1743px 1509px #FFF, 1260px 1118px #FFF, 360px 556px #FFF, 447px 1436px #FFF, 1303px 503px #FFF, 1770px 957px #FFF, 691px 1558px #FFF, 818px 51px #FFF, 665px 1911px #FFF, 1588px 944px #FFF, 235px 1481px #FFF, 1392px 1008px #FFF, 1519px 1297px #FFF, 1614px 337px #FFF, 594px 423px #FFF, 1490px 1780px #FFF, 282px 805px #FFF, 1062px 867px #FFF, 119px 1240px #FFF, 707px 384px #FFF, 952px 864px #FFF, 1631px 1362px #FFF, 26px 1956px #FFF, 886px 1673px #FFF, 421px 1996px #FFF, 503px 1109px #FFF, 61px 1487px #FFF, 1880px 1882px #FFF, 50px 738px #FFF, 1276px 1530px #FFF, 134px 1293px #FFF, 1752px 1400px #FFF, 1761px 1495px #FFF, 125px 1129px #FFF, 1752px 584px #FFF, 1952px 214px #FFF, 70px 501px #FFF, 1894px 1845px #FFF, 1224px 607px #FFF, 1893px 994px #FFF, 742px 1314px #FFF, 224px 568px #FFF, 1580px 995px #FFF, 394px 1216px #FFF, 240px 516px #FFF, 1612px 967px #FFF, 866px 1455px #FFF, 244px 473px #FFF, 486px 641px #FFF, 1855px 1735px #FFF, 1161px 1267px #FFF, 536px 72px #FFF, 1962px 72px #FFF, 1952px 543px #FFF, 1325px 1046px #FFF, 1804px 862px #FFF, 999px 160px #FFF, 858px 557px #FFF, 974px 933px #FFF, 711px 1391px #FFF, 1900px 533px #FFF, 445px 34px #FFF, 1410px 1708px #FFF, 502px 438px #FFF, 946px 404px #FFF, 1728px 1148px #FFF, 978px 1321px #FFF, 1566px 1616px #FFF, 131px 830px #FFF, 522px 1883px #FFF, 1389px 845px #FFF, 1425px 1889px #FFF, 1415px 923px #FFF, 1460px 1671px #FFF, 1248px 72px #FFF, 1997px 250px #FFF, 537px 1482px #FFF, 709px 1475px #FFF, 703px 1246px #FFF, 269px 1801px #FFF, 560px 1627px #FFF, 1048px 969px #FFF, 970px 1569px #FFF, 832px 859px #FFF, 432px 1874px #FFF, 132px 93px #FFF, 1505px 1546px #FFF, 488px 1252px #FFF, 271px 1166px #FFF, 858px 1058px #FFF, 391px 1843px #FFF, 210px 1157px #FFF, 373px 1182px #FFF, 968px 130px #FFF, 1666px 287px #FFF, 1336px 1772px #FFF, 1755px 1636px #FFF, 569px 1289px #FFF, 279px 1002px #FFF, 1940px 1543px #FFF, 1659px 245px #FFF, 1153px 1262px #FFF, 789px 415px #FFF, 1280px 1053px #FFF, 1895px 1072px #FFF, 798px 1382px #FFF, 807px 1936px #FFF, 940px 895px #FFF, 875px 895px #FFF, 1313px 1091px #FFF, 1570px 91px #FFF, 1271px 1284px #FFF, 1937px 259px #FFF, 613px 648px #FFF, 1101px 745px #FFF, 700px 1203px #FFF, 306px 236px #FFF, 446px 220px #FFF, 1717px 12px #FFF, 966px 715px #FFF, 1183px 70px #FFF, 1819px 601px #FFF, 1795px 261px #FFF, 1901px 1878px #FFF, 1612px 1532px #FFF, 115px 799px #FFF, 187px 1871px #FFF, 828px 758px #FFF, 683px 453px #FFF, 369px 1923px #FFF, 973px 713px #FFF, 358px 1760px #FFF, 430px 286px #FFF, 1537px 578px #FFF, 211px 84px #FFF, 505px 1876px #FFF, 1421px 470px #FFF, 1879px 188px #FFF, 1884px 1432px #FFF, 180px 105px #FFF, 916px 1601px #FFF, 848px 721px #FFF, 1982px 1300px #FFF, 1884px 551px #FFF, 1602px 1831px #FFF, 471px 462px #FFF, 882px 118px #FFF, 1883px 763px #FFF, 1563px 521px #FFF, 755px 160px #FFF;
    animation: animStar 100s linear infinite;
}


@keyframes animStar{
    100%{
        transform: translateY(-100px);/**/
    }
}