svg+css实现自适应黑白主题切换的顶部菜单效果代码-html代码-BFW代码库

代码语言：html
代码描述：svg+css实现自适应黑白主题切换的顶部菜单效果代码
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" class="dark">

<head>
  <meta charset="UTF-8">
  
<link type="text/css" rel="stylesheet" href="//repo.bfw.wiki/bfwrepo/css/normalize.5.0.css">
  
<style>


*,
*:after,
*:before {
	box-sizing: border-box;
}

:root {
	--bg: hsl(0 0% 90%);
	--nav: hsl(0 0% 100%);
	--color: hsl(0 0% 30%);
}

:root.dark {
	--bg: hsl(0 0% 0%);
	--nav: hsl(0 0% 14%);
	--color: hsl(0 0% 90%);
}

body {
	place-items: center;
	min-height: 100vh;
	font-family:  "SF Pro Text", "SF Pro Icons", "AOS Icons", "Helvetica Neue", Helvetica, Arial, sans-serif, system-ui;
	background: var(--bg);
	color: var(--color);
}

nav {
	height: 60px;
	position: sticky;
	top: 0;
	left: 0;
	right: 0;
	text-transform: uppercase;
	font-family: monospace;
	font-size: 14px;
	background: var(--nav);
}

.nav__content {
	width: 1100px;
	display: flex;
	max-width: calc(100% - 2rem);
	margin: 0 auto;
	height: 100%;
	gap: 1rem;
	position: relative;
	justify-content: space-between;
	background: var(--nav);
}

.nav__control {
	width: 60px;
}

label {
	display: grid;
	place-items: center;
	height: 100%;
	width: 100%;
	cursor: pointer;
}

.nav__control svg {
	width: 24px;
	stroke-width: 2.5;
	rotate: calc(var(--active-nav, 0) * 45deg);
	transition: rotate var(--speed);
}

input:focus-visible + label {
	outline: 1px solid red;
}

.nav__content > a svg {
	width: 32px;
/*	color: hsl(0 0% 15%);*/
}

.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border-width: 0;
}

.nav__options a {
	position: relative;
	padding: 1rem 2rem;
	height: 60px;
}

.nav__options svg {
	height: 16px;
	stroke-width: 2.5px;
}

.nav__options {
	position: absolute;
	right: -1rem;
	top: 100%;
	background: var(--nav);
	width: calc(100% + 2rem);
	translate: 0 calc(-100% + (var(--active-nav, 0) * (100% + 2px)));
	transition: translate var(--speed);
	z-index: -1;
}

a:focus-visible {
	outline: 1px solid red;
}

:root:has(#menu:checked) {
	--active-nav: 1;
}

.nav__options a:not(:last-of-type) {
	border-bottom: 2px solid var(--bg	);
}

nav a {
	display: flex;
	place-items: center;
	padding: 1rem;
	text-decoration: none;
	justify-content: space-between;
	color: currentColor;
}

nav a:is(:hover, :focus-visible) {
	--active: 1;
}

.link svg {
	opacity: var(--active, 0);
	rotate: calc(var(--active, 0) * -45deg);
	scale: calc(1 + (var(--active, 0) * 0.1));
	transition: opacity calc(var(--speed) * 1.5), rotate var(--speed), scale var(--speed);
}

.ebook {
	display: none;
}

@media(min-width: 1200px) {
	.ebook {
		display: flex;
	}
}

/* The :hover stuff */
:root {
  --speed: 0.25s;
}

@media(min-width: 768px) {
	:root {
	  --lerp-0: 1; /* === sin(90deg) */
	  --lerp-1: calc(sin(30deg));
	  --lerp-2: calc(sin(20deg));
	  --lerp-3: calc(sin(10deg));
	  --lerp-4: 0;
	  --speed: 0.25s;
	}
	.nav__control {
		display: none;
	}
	.nav__options {
		flex: 1;
		display: grid;
		grid-auto-flow: column;
		grid-auto-columns: 1fr;
		position: static;
		width: auto;
		translate: 0 0;
		z-index: 1;
		/*position: absolute;
		right: -1rem;
		top: 100%;
		background: var(--nav);
		width: calc(100% + 2rem);
		translate: 0 calc(-100% + (var(--active-nav, 0) * (100% + 2px)));
		transition: translate var(--speed);*/
	}

	.nav__options a:not(:last-of-type) {	
		border-bottom: 0;
	}

	.link::before {
		content: "";
		position: absolute;
		height: 300%;
		border-right: 2px solid var(--bg);
		bottom: 0;
		background: var(--nav);
		z-index: -1;
		left: 0;
		right: 0;
	}
	.link {
		translate: 0 calc(var(--lerp, 0) * 80%);
		transition: translate var(--speed);
	}

	:is(.link:hover, .link:focus-visible) {
	  --lerp: var(--lerp-0);
	  z-index: 5;
	}
	.link:has( + :is(.link:hover, .link:focus-visible)),
	:is(.link:hover, .link:focus-visible) + .link {
	  --lerp: var(--lerp-1);
	  z-index: 4;
	}
	.link:has( + .link + :is(.link:hover, .link:focus-visible)),
	:is(.link:hover, .link:focus-visible) + .link + .link {
	  --lerp: var(--lerp-2);
	  z-index: 3;
	}
	.link:has( + .link + .link + :is(.link:hover, .link:focus-visible)),
	:is(.link:hover, .link:focus-visible) + .link + .link + .link {
	  --lerp: var(--lerp-3);
	  z-index: 2;
	}
	.link:has( + .link + .link + .link + :is(.link:hover, .link:focus-visible)),
	:is(.link:hover, .link:focus-visible) + .link + .link + .link + .link {
	  --lerp: var(--lerp-4);
	  z-index: 1;
	}
}


/* Socials stuff */
.x-link, .bear-link {
	color: currentColor;
	position: fixed;
	bottom: 1rem;
	left: 1rem;
	width: 48px;
	aspect-ratio: 1;
	display: grid;
	place-items: center;
	opacity: 0.8;
}

.bear-link {
	bottom: unset;
	top: 1rem;
}

:where(.x-link, .bear-link):is(:hover, :focus-visible) {
	opacity: 1;
}
.bear-link svg {
	width: 75%;
}
.x-link svg {
	width: 50%;
}

.eye {
	transform-box: fill-box;
	transform-origin: 50% 50%;
  -webkit-animation: blink 6s -2s infinite;
          animation: blink 6s -2s infinite;
}

@-webkit-keyframes blink {
  0%, 46%, 48%, 50%, 100% {
    scale: 1 1;
  }
  47%, 49% {
    scale: 1 0.01;
  }
}

@keyframes blink {
  0%, 46%, 48%, 50%, 100% {
    scale: 1 1;
  }
  47%, 49% {
    scale: 1 0.01;
  }
}


/* Theme toggle */
.theme-toggle {
  color: var(--color);
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  width: 48px;
  aspect-ratio: 1;
  padding: 0;
  border: 0;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: transparent;
  transition: background 0.2s;
  cursor: pointer;
  z-index: 10;
}

.theme-toggle:is(:hover, :focus-visible) {
  background: var(--nav);
}

.theme-toggle[aria-pressed=true] svg path:last-of-type {
  display: block;
}

.theme-toggle svg {
  color: currentColor;
  width: 50%;
}

.theme-toggle[aria-pressed=true] svg path:first-of-type,
.theme-toggle svg path:last-of-type {
  display: none;
}

/* View Transitions */
::view-transition-group(root) {
	-webkit-animation-duration: 1.25s;
	        animation-duration: 1.25s;
} 
::view-transition-old(root),
::view-transition-new(root) {
	mix-blend-mode: normal;
}

::view-transition-old(root) {
	-webkit-animation: none;
	        animation: none;
}

::view-transition-new(root) {
	z-index: 2;
}

::view-transition-new(root),
::view-transition-old(root) {
  -webkit-animation: none;
          animation: none;
  mix-blend-mode: normal;
  height: 100%;
  width: 100%;
}

::view-transition-new(root) {
  z-index: 2;
  -webkit-animation: slice 1s;
          animation: slice 1s;
}

/*@keyframes slice {
	0% { clip-path: inset(100% 0 0 0); }
	100% { clip-path: inset(0 0 0 0); }
}*/

/* polygon clipper */
@-webkit-keyframes slice {
	0% {
		-webkit-clip-path: polygon(
			/* Start in the top left	*/
			0 -110%,
			/* Make columns as you go across */
			25% -110%,
			25% -110%,
			50% -110%,
			50% -110%,
			75% -110%,
			75% -110%,
			100% -110%,
			/* Then make sure they are mirrored */
			100% -110%,
			75% -110%,
			75% -110%,
			50% -110%,
			50% -110%,
			25% -110%,
			25% -110%,
			0 -110%
		);
		        clip-path: polygon(
			/* Start in the top left	*/
			0 -110%,
			/* Make columns as you go across */
			25% -110%,
			25% -110%,
			50% -110%,
			50% -110%,
			75% -110%,
			75% -110%,
			100% -110%,
			/* Then make sure they are mirrored */
			100% -110%,
			75% -110%,
			75% -110%,
			50% -110%,
			50% -110%,
			25% -110%,
			25% -110%,
			0 -110%
		);
	}
	100% {
		-webkit-clip-path: polygon(
			/* Start in the top left	*/
			0 0,
			/* Make columns as you go across */
			25% 0,
			25% 0,
			50% 0,
			50% 0,
			75% 0,
			75% 0,
			100% 0,
			/* Then make sure they are mirrored */
			100% calc(100% + 40px),
			75% calc(100% + 40px),
			75% calc(100% + 100px),
			50% calc(100% + 100px),
			50% calc(100% + 60px),
			25% calc(100% + 60px),
			25% 100%,
			0 100%
		);
		        clip-path: polygon(
			/* Start in the top left	*/
			0 0,
			/* Make columns as you go across */
			25% 0,
			25% 0,
			50% 0,
			50% 0,
			75% 0,
			75% 0,
			100% 0,
			/* Then make sure they are mirrored */
			100% calc(100% + 40px),
			75% calc(100% + 40px),
			75% calc(100% + 100px),
			50% calc(100% + 100px),
			50% calc(100% + 60px),
			25% calc(100% + 60px),
			25% 100%,
			0 100%
		);
	}
}
@keyframes slice {
	0% {
		-webkit-clip-path: polygon(
			/* Start in the top left	*/
			0 -110%,
			/* Make columns as you go across */
			25% -110%,
			25% -110%,
			50% -110%,
			50% -110%,
			75% -110%,
			75% -110%,
			100% -110%,
			/* Then make sure they are mirrored */
			100% -110%,
			75% -110%,
			75% -110%,
			50% -110%,
			50% -110%,
			25% -110%,
			25% -110%,
			0 -110%
		);
		        clip-path: polygon(
			/* Start in the top left	*/
			0 -110%,
			/* Make columns as you go across */
			25% -110%,
			25% -110%,
			50% -110%,
			50% -110%,
			75% -110%,
			75% -110%,
			100% -110%,
			/* Then make sure they are mirrored */
			100% -110%,
			75% -110%,
			75% -110%,
			50% -110%,
			50% -110%,
			25% -110%,
			25% -110%,
			0 -110%
		);
	}
	100% {
		-webkit-clip-path: polygon(
			/* Start in the top left	*/
			0 0,
			/* Make columns as you go across */
			25% 0,
			25% 0,
			50% 0,
			50% 0,
			75% 0,
			75% 0,
			100% 0,
			/* Then make sure they are mirrored */
			100% calc(100% + 40px),
			75% calc(100% + 40px),
			75% calc(100% + 100px),
			50% calc(100% + 100px),
			50% calc(100% + 60px),
			25% calc(100% + 60px),
			25% 100%,
			0 100%
		);
		        clip-path: polygon(
			/* Start in the top left	*/
			0 0,
			/* Make columns as you go across */
			25% 0,
			25% 0,
			50% 0,
			50% 0,
			75%.........完整代码请登录后点击上方下载按钮下载查看