<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>CSS 404页面- vfaner.com</title>
<style>
@import url("https://fonts.googleapis.com/css?family=Lato|Russo+One");
*,
*:after,
*:before {
box-sizing: border-box;
}
body {
padding: 0;
margin: 0;
}
.container {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100vh;
overflow: hidden;
}
.container-star {
background-image: linear-gradient(to bottom, #292256 0%, #8446cf 70%, #a871d6 100%);
}
.container-star:after {
background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0) 40%, rgba(15, 10, 38, 0.2) 100%);
content: "";
width: 100%;
height: 100%;
position: absolute;
top: 0;
}
.star-1 {
position: absolute;
border-radius: 50%;
background-color: #ffffff;
-webkit-animation: twinkle 5s infinite ease-in-out;
animation: twinkle 5s infinite ease-in-out;
}
.star-1:after {
height: 100%;
width: 100%;
-webkit-transform: rotate(90deg);
transform: rotate(90deg);
content: "";
position: absolute;
background-color: #fff;
border-radius: 50%;
}
.star-1:before {
background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.5) 0%, rgba(255, 255, 255, 0) 60%, rgba(255, 255, 255, 0) 100%);
position: absolute;
border-radius: 50%;
content: "";
top: -20%;
left: -50%;
}
.star-1:nth-of-type(1) {
top: 78vh;
left: 44vw;
width: 9px;
height: 3px;
-webkit-animation-delay: 4s;
animation-delay: 4s;
}
.star-1:nth-of-type(1):before {
width: 18px;
height: 18px;
top: -250%;
}
.star-1:nth-of-type(2) {
top: 94vh;
left: 67vw;
width: 6px;
height: 2px;
-webkit-animation-delay: 3s;
animation-delay: 3s;
}
.star-1:nth-of-type(2):before {
width: 12px;
height: 12px;
top: -250%;
}
.star-1:nth-of-type(3) {
top: 41vh;
left: 66vw;
width: 6px;
height: 2px;
-webkit-animation-delay: 1s;
animation-delay: 1s;
}
.star-1:nth-of-type(3):before {
width: 12px;
height: 12px;
top: -250%;
}
.star-1:nth-of-type(4) {
top: 72vh;
left: 77vw;
width: 9px;
height: 3px;
-webkit-animation-delay: 3s;
animation-delay: 3s;
}
.star-1:nth-of-type(4):before {
width: 18px;
height: 18px;
top: -250%;
}
.star-1:nth-of-type(5) {
top: 14vh;
left: 68vw;
width: 9px;
height: 3px;
-webkit-animation-delay: 4s;
animation-delay: 4s;
}
.star-1:nth-of-type(5):before {
width: 18px;
height: 18px;
top: -250%;
}
.star-1:nth-of-type(6) {
top: 26vh;
left: 79vw;
width: 6px;
height: 2px;
-webkit-animation-delay: 4s;
animation-delay: 4s;
}
.star-1:nth-of-type(6):before {
width: 12px;
height: 12px;
top: -250%;
}
.star-1:nth-of-type(7) {
top: 28vh;
left: 84vw;
width: 9px;
height: 3px;
-webkit-animation-delay: 1s;
animation-delay: 1s;
}
.star-1:nth-of-type(7):before {
width: 18px;
height: 18px;
top: -250%;
}
.star-1:nth-of-type(8) {
top: 42vh;
left: 28vw;
width: 4px;
height: 1.3333333333px;
-webkit-animation-delay: 3s;
animation-delay: 3s;
}
.star-1:nth-of-type(8):before {
width: 8px;
height: 8px;
top: -250%;
}
.star-1:nth-of-type(9) {
top: 7vh;
left: 99vw;
width: 7px;
height: 2.3333333333px;
-webkit-animation-delay: 1s;
animation-delay: 1s;
}
.star-1:nth-of-type(9):before {
width: 14px;
height: 14px;
top: -250%;
}
.star-1:nth-of-type(10) {
top: 97vh;
left: 76vw;
width: 4px;
height: 1.3333333333px;
-webkit-animation-delay: 2s;
animation-delay: 2s;
}
.star-1:nth-of-type(10):before {
width: 8px;
height: 8px;
top: -250%;
}
.star-1:nth-of-type(11) {
top: 76vh;
left: 89vw;
width: 9px;
height: 3px;
-webkit-animation-delay: 4s;
animation-delay: 4s;
}
.star-1:nth-of-type(11):before {
width: 18px;
height: 18px;
top: -250%;
}
.star-1:nth-of-type(12) {
top: 16vh;
left: 92vw;
width: 8px;
height: 2.6666666667px;
-webkit-animation-delay: 1s;
animation-delay: 1s;
}
.star-1:nth-of-type(12):before {
width: 16px;
height: 16px;
top: -250%;
}
.star-1:nth-of-type(13) {
top: 78vh;
left: 33vw;
width: 6px;
height: 2px;
-webkit-animation-delay: 4s;
animation-delay: 4s;
}
.star-1:nth-of-type(13):before {
width: 12px;
height: 12px;
top: -250%;
}
.star-1:nth-of-type(14) {
top: 12vh;
left: 67vw;
width: 7px;
height: 2.3333333333px;
-webkit-animation-delay: 5s;
animation-delay: 5s;
}
.star-1:nth-of-type(14):before {
width: 14px;
height: 14px;
top: -250%;
}
.star-1:nth-of-type(15) {
top: 64vh;
left: 51vw;
width: 4px;
height: 1.3333333333px;
-webkit-animation-delay: 4s;
animation-delay: 4s;
}
.star-1:nth-of-type(15):before {
width: 8px;
height: 8px;
top: -250%;
}
.star-1:nth-of-type(16) {
top: 71vh;
left: 95vw;
width: 4px;
height: 1.3333333333px;
-webkit-animation-delay: 4s;
animation-delay: 4s;
}
.star-1:nth-of-type(16):before {
width: 8px;
height: 8px;
top: -250%;
}
.star-1:nth-of-type(17) {
top: 56vh;
left: 31vw;
width: 7px;
height: 2.3333333333px;
-webkit-animation-delay: 2s;
animation-delay: 2s;
}
.star-1:nth-of-type(17):before {
width: 14px;
height: 14px;
top: -250%;
}
.star-1:nth-of-type(18) {
top: 33vh;
left: 80vw;
width: 6px;
height: 2px;
-webkit-animation-delay: 5s;
animation-delay: 5s;
}
.star-1:nth-of-type(18):before {
width: 12px;
height: 12px;
top: -250%;
}
.star-1:nth-of-type(19) {
top: 30vh;
left: 14vw;
width: 8px;
height: 2.6666666667px;
-webkit-animation-delay: 5s;
animation-delay: 5s;
}
.star-1:nth-of-type(19):before {
width: 16px;
height: 16px;
top: -250%;
}
.star-1:nth-of-type(20) {
top: 53vh;
left: 43vw;
width: 6px;
height: 2px;
-webkit-animation-delay: 3s;
animation-delay: 3s;
}
.star-1:nth-of-type(20):before {
width: 12px;
height: 12px;
top: -250%;
}
.star-1:nth-of-type(21) {
top: 32vh;
left: 9vw;
width: 7px;
height: 2.3333333333px;
-webkit-animation-delay: 2s;
animation-delay: 2s;
}
.star-1:nth-of-type(21):before {
width: 14px;
height: 14px;
top: -250%;
}
.star-1:nth-of-type(22) {
top: 97vh;
left: 9vw;
width: 5px;
height: 1.6666666667px;
-webkit-animation-delay: 2s;
animation-delay: 2s;
}
.star-1:nth-of-type(22):before {
width: 10px;
height: 10px;
top: -250%;
}
.star-1:nth-of-type(23) {
top: 62vh;
left: 6vw;
width: 5px;
height: 1.6666666667px;
-webkit-animation-delay: 4s;
animation-delay: 4s;
}
.star-1:nth-of-type(23):before {
width: 10px;
height: 10px;
top: -250%;
}
.star-1:nth-of-type(24) {
top: 57vh;
left: 13vw;
width: 9px;
height: 3px;
-webkit-animation-delay: 3s;
animation-delay: 3s;
}
.star-1:nth-of-type(24):before {
width: 18px;
height: 18px;
top: -250%;
}
.star-1:nth-of-type(25) {
top: 52vh;
left: 60vw;
width: 4px;
height: 1.3333333333px;
-webkit-animation-delay: 5s;
animation-delay: 5s;
}
.star-1:nth-of-type(25):before {
width: 8px;
height: 8px;
top: -250%;
}
.star-1:nth-of-type(26) {
top: 5vh;
left: 84vw;
width: 5px;
height: 1.6666666667px;
-webkit-animation-delay: 1s;
animation-delay: 1s;
}
.star-1:nth-of-type(26):before {
width: 10px;
height: 10px;
top: -250%;
}
.star-1:nth-of-type(27) {
top: 26vh;
left: 23vw;
width: 8px;
height: 2.6666666667px;
-webkit-animation-delay: 5s;
animation-delay: 5s;
}
.star-1:nth-of-type(
数学试卷题目生成器 小学数学出题源码 加减乘除混合出题神器.zip
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数学试卷题目生成器 小学数学出题源码 加减乘除混合出题神器.zip （3个子文件） 
数学试卷题目生成器 小学数学出题源码 加减乘除混合出题神器 
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