纯css+div实现年份是否闰年计算代码-html代码-BFW代码库

代码语言：html

所属分类：其他

代码描述：纯css+div实现年份是否闰年计算代码，无js代码，纯粹css和div实现。

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >

<head>
  <meta charset="UTF-8">
  

  <link rel='stylesheet' href='https://fonts.googleapis.com/css2?family=Nabla&amp;display=swap'>
  
<style>
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  --display-height: 160px;
  --arrow-height: 30px;
  height: 100vh;
  background: linear-gradient(160deg, #555 0%, #222 100%);
}

.leap-year {
  position: relative;
  user-select: none;
  -webkit-user-select: none;
}

.cb {
  position: absolute;
  top: calc(50vh - 50px - var(--display-height) / 2 - var(--arrow-height));
  z-index: 100;
  display: none;
  width: 100px;
  height: var(--arrow-height);
  appearance: none;
  -moz-appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}
.cb:checked {
  top: calc(50vh - 50px + var(--display-height) / 2);
}
.cb.n-0, .cb:checked + .cb {
  display: block;
}
.cb.closer {
  display: none !important;
}

.up,
.down {
  position: absolute;
  z-index: 100;
  width: 100px;
  height: var(--arrow-height);
  opacity: 1;
  background: gold;
  transition: opacity 100ms linear;
  pointer-events: none;
}

.up {
  top: calc(50vh - 50px - var(--display-height) / 2 - var(--arrow-height));
  clip-path: polygon(40% 70%, 60% 70%, 50% 30%);
}

.down {
  top: calc(50vh - 50px + var(--display-height) / 2);
  clip-path: polygon(40% 30%, 60% 30%, 50% 70%);
}

.th-0:not(:checked) ~ .arrows .down.th,
.th-8:checked ~ .arrows .up.th,
.h-0:not(:checked) ~ .arrows .down.h,
.h-8:checked ~ .arrows .up.h,
.t-0:not(:checked) ~ .arrows .down.t,
.t-8:checked ~ .arrows .up.t,
.o-0:not(:checked) ~ .arrows .down.o,
.o-8:checked ~ .arrows .up.o {
  opacity: 0.3;
}

.display {
  --numbers: "0 \a 1 \a 2 \a 3 \a 4 \a 5 \a 6 \a 7 \a 8 \a 9";
  --number: 0;
  position: absolute;
  top: calc(50vh - 50px - var(--display-height) / 2);
  z-index: 200;
  display: flex;
  overflow: hidden;
  width: 100px;
  height: var(--display-height);
  border-right: 4px solid #999;
  border-left: 4px solid #666;
  border-top: 2px solid #666;
  border-bottom: 2px solid #999;
  justify-content: center;
  align-items: center;
  background: linear-gradient(to bottom, #777 0%, #333 100%);
  color: gold;
  font-family: sans-serif;
  font-size: 140px;
  font-weight: 900;
  line-height: var(--display-height);
  text-align: center;
  text-shadow: 1px 1px 2px #777, -1px -1px 2px #333;
}
.display::before {
  --shift: calc(var(--number) * (var(--display-height) * -1));
  position: absolute;
  top: 0;
  left: 0;
  font-size: inherit;
  line-height: inherit;
  transform: translate3d(0, var(--shift), 0);
  transition: transform 300ms cubic-bezier(0.6, 0, 0.6, 1.5);
  content: var(--numbers);
}
.display::after {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  box-shadow: inset 0 -8px 8px rgba(0, 0, 0, 0.8), inset 0 8px 8px rgba(0, 0, 0, 0.8);
  content: "";
}

.th-0:checked ~ .display-th,
.h-0:checked ~ .display-h,
.t-0:checked ~ .display-t,
.o-0:checked ~ .display-o {
  --number: 1;
}

.th-1:checked ~ .display-th,
.h-1:checked ~ .display-h,
.t-1:checked ~ .display-t,
.o-1:checked ~ .display-o {
  --number: 2;
}

.th-2:checked ~ .display-th,
.h-2:checked ~ .display-h,
.t-2:checked ~ .display-t,
.o-2:checked ~ .display-o {
  --number: 3;
}

.th-3:checked ~ .display-th,
.h-3:checked ~ .display-h,
.t-3:checked ~ .display-t,
.o-3:checked ~ .display-o {
  --number: 4;
}

.th-4:checked ~ .display-th,
.h-4:checked ~ .display-h,
.t-4:checked ~ .display-t,
.o-4:checked ~ .display-o {
  --number: 5;
}

.th-5:checked ~ .display-th,
.h-5:checked ~ .display-h,
.t-5:checked ~ .display-t,
.o-5:checked ~ .display-o {
  --number: 6;
}

.th-6:checked ~ .display-th,
.h-6:checked ~ .display-h,
.t-6:checked ~ .display-t,
.o-6:checked ~ .display-o {
  --number: 7;
}

.th-7:checked ~ .display-th,
.h-7:checked ~ .display-h,
.t-7:checked ~ .display-t,
.o-7:checked ~ .display-o {
  --number: 8;
}

.th-8:checked ~ .display-th,
.h-8:checked ~ .display-h,
.t-8:checked ~ .display-t,
.o-8:checked ~ .display-o {
  --number: 9;
}

.th,
.display-th {
  left: calc(50vw - 200px);
}

.h,
.display-h {
  left: calc(50vw - 100px);
}

.t,
.display-t {
  left: 50vw;
}

.o,
.display-o {
  left: calc(50vw + 100px);
}

.indicator {
  --container-shadow: rgba(255, 255, 255, 0.3);
  --is-color: rgba(255, 255, 255, 0.05);
  --is-outline: #444;
  --is-text-shadow: none;
  --is-switch-duration: 500ms;
  --is-switch-function: cubic-bezier(0,.5,0,1);
  --is-z: 10;
  --not-color: #e00;
  --not-outline: #a00;
  --not-text-shadow: 0 0 200px rgba(255, 0, 0, 0.9);
  --not-switch-duration: 700ms;
  --not-switch-function: linear(0 0%, 0.8 1%, 0.8 10%, 0 15%, 0 40%, 0.5 41%, 0 50%, 0 60%, 0.7 61%, 0 80%, 0 95%, 1 100%);
  --not-z: 11;
  position: absolute;
  top: calc(50vh - 300px);
  left: calc(50vw - 250px);
  width: 500px;
  height: 600px;
  border: 4px ridge gold;
  border-radius: 20px;
  background: linear-gradient(to bottom, #444 0%, #222 100%);
  box-shadow: 0 0 200px var(--container-shadow), 10px 20px 50px rgba(0, 0, 0, 0.9);
  color: gold;
  font-size: 60px;
  line-height: 1em;
  font-weight: 900;
  font-family: sans-serif;
  text-transform: uppercase;
  text-align: center;
  letter-spacing: -0.05em;
  text-shadow: 0 0 30px rgba(255, 200, 0, 0.5);
  -webkit-text-stroke: 2px #333;
}
.indicator .topline,
.indicator .secondline,
.indicator .bottomline {
  position: relative;
  filter: drop-shadow(2px 2px 0 black);
}
.indicator .topline {
  margin-top: 30px;
  font-size: 80px;
  line-height: 1em;
}
.indicator .secondline {
  margin-top: 270px;
  font-size: 95px;
  line-height: 1em;
}
.indicator .is,
.indicator .not {
  z-index: 10;
  white-space: nowrap;
}
.indicator .is {
  color: var(--is-color);
  text-shadow: var(--is-text-shadow);
  -webkit-text-stroke: 2px var(--is-outline);
  transition: color var(--is-switch-duration) var(--is-switch-function), text-shadow var(--is-switch-duration) var(--is-switch-function), -webkit-text-stroke var(--is-switch-duration) var(--is.........完整代码请登录后点击上方下载按钮下载查看