css实现三种发光下拉选择框美化效果代码-html代码-BFW代码库

代码语言：html

代码描述：css实现三种发光下拉选择框美化效果代码

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" >

<head>

  <meta charset="UTF-8">
  

  
  
  
<style>
@font-face {
  font-family: "Mona Sans";
  src: url("https://assets.codepen.io/64/Mona-Sans.woff2") format("woff2 supports variations"), url("https://assets.codepen.io/64/Mona-Sans.woff2") format("woff2-variations");
  font-weight: 100 1000;
}
@layer properties {
  @property --max-height {
    syntax: "<number>";
    inherits: true;
    initial-value: 0;
  }
  @property --bg-x {
    syntax: "<number>";
    inherits: true;
    initial-value: 50;
  }
  @property --bg-y {
    syntax: "<number>";
    inherits: true;
    initial-value: -200;
  }
  @property --scale {
    syntax: "<number>";
    inherits: true;
    initial-value: 1;
  }
  @property --accent-color-hue {
    syntax: "<number>";
    inherits: true;
    initial-value: 0;
  }
  @property --accent-color-hue {
    syntax: "<number>";
    inherits: true;
    initial-value: 0;
  }
  @property --item-y {
    syntax: "<number>";
    inherits: true;
    initial-value: 0;
  }
  @property --item-opacity {
    syntax: "<number>";
    inherits: true;
    initial-value: 0;
  }
  @property --accent-color {
    syntax: "<color>";
    inherits: true;
    initial-value: hsl(calc(var(--accent-color-hue)*1deg), 100%, 58%);
  }
  @property --radial-bg-color {
    syntax: "<color>";
    inherits: true;
    initial-value: black;
  }
}
:root {
  --background-color: hsl(222deg 17% 14%);
  --dark-color: hsl(227deg 37% 3%);
  --light-color: hsl(211deg 23% 51%);
  --accent-color-hue: 219;
  --accent-color: hsl(calc(var(--accent-color-hue)*1deg) 100% 58%);
  --radial-bg-color: var(--dark-color);
  --max-height: 0;
  --bg-y: -50;
  --bg-x: 200;
  --item-y: 20;
  --item-opacity: 0;
  /* Misc */
  --_inner-radius: 10;
  --_inner-padding: 6;
  --inner-radius: calc(var(--_inner-radius) * 1px);
  --inner-padding: calc(var(--_inner-padding) * 1px);
  --outer-radius: calc(calc(var(--_inner-radius) + var(--_inner-padding)) * 1px);
  --debug: 0;
  --a11y: 0;
  --outline-color: hsla(calc(var(--accent-color-hue)*1deg) 100% 58% / calc(var(--a11y)*100%));
}

*, *:before, *:after {
  box-sizing: border-box;
  outline: calc(var(--debug)*1px) dotted red;
  outline-offset: -1px;
}

html, body {
  width: 100%;
  height: 100%;
  padding: 0;
  margin: 0;
}

body {
  background: var(--background-color);
  font-family: "Mona sans", sans-serif;
}

main {
  max-width: 800px;
  margin: 16em auto;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  grid-gap: 32px;
  place-items: center;
  align-items: start;
}

@media (min-width: 760px) {
  main {
    grid-template-columns: repeat(3, 1fr);
  }
}
header {
  color: white;
}
header h3 {
  letter-spacing: 0.15em;
}

div.select {
  color: white;
  background: var(--dark-color) radial-gradient(ellipse 70% 70% at calc(var(--bg-x)*1%) calc(var(--bg-y)*1%), var(--radial-bg-color) 0%, var(--dark-color) 100%);
  padding: var(--inner-padding);
  border-radius: var(--outer-radius);
  position: relative;
  width: 200px;
  z-index: 1;
  transition: background 0.3s ease, --bg-y 0.4 ease, --bg-x 0.4s ease;
  /*
  * :focus-within or :has(button:focus) */
}
div.select:hover {
  animation: glow 1.2s ease-in-out;
}
div.select:hover > button:after {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='58' height='98' fill='none'%3E%3Cpath fill='hsl(219deg 100% 58%)' d='M25.536 6c1.54-2.667 5.388-2.667 6.928 0l18.187 31.5c1.54 2.667-.385 6-3.465 6H10.814c-3.079 0-5.003-3.333-3.464-6L25.536 6ZM25.536 92c1.54 2.667 5.388 2.667 6.928 0l18.187-31.5c1.54-2.667-.385-6-3.465-6H10.814c-3.079 0-5.003 3.333-3.464 6L25.536 92Z'/%3E%3C/svg%3E") no-repeat center center/0.6em;
}
div.select:before {
  content: "";
  display: block;
  position: absolute;
  width: calc(100% - 2px);
  height: calc(100% - 2px);
  top: 1px;
  left: 1px;
  background: var(--dark-color);
  border-radius: var(--outer-radius);
  z-index: -1;
}
div.select > button {
  padding: calc(var(--inner-padding)*2) calc(var(--inner-padding)*2);
  background: var(--background-color);
  border-radius: var(--inner-radius);
  border: 0;
  color: white;
  text-align: left;
  font-size: 1em;
  width: 100%;
  cursor: pointer;
  position: relative;
  box-shadow: inset 0 2px 1px -1px rgba(255, 255, 255, 0.1);
  transform: scale(var(--scale));
  animation-duration: 0.2s;
  animation-timing-function: cubic-bezier(0.66, -0.82, 0.33, 1.73);
}
div.select > button:focus {
  outline: 1px solid var(--accent-color);
  outline-offset: -1px;
}
div.select > button:after {
  content: "";
  position: absolute;
  right: 8px;
  height: 100%;
  width: 1em;
  top: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='58' height='98' fill='none'%3E%3Cpath fill='hsl(211deg 23% 51%)' d='M25.536 6c1.54-2.667 5.388-2.667 6.928 0l18.187 31.5c1.54 2.667-.385 6-3.465 6H10.814c-3.079 0-5.003-3.333-3.464-6L25.536 6ZM25.536 92c1.54 2.667 5.388 2.667 6.928 0l18.187-31.5c1.54-2.667-.385-6-3.465-6H10.814c-3.079 0-5.003 3.333-3.464 6L25.536 92Z'/%3E%3C/svg%3E") no-repeat center center/0.6em;
}
div.select > div {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 0;
  /* transition: --max-height .2s ease; ?? not working ?? */
  transition: height 0.3s ease-in-out;
}
div.select >.........完整代码请登录后点击上方下载按钮下载查看