js+css实现自定义下拉选择框效果代码-html代码-BFW代码库

js+css实现自定义下拉选择框效果代码

代码语言：html

所属分类：选择器

代码描述：js+css实现自定义下拉选择框效果代码钮效果代码

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">

      <meta name="viewport" content="width=device-width, initial-scale=1">
      <link rel="preconnect" href="https://fonts.googleapis.com">
      <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
      <link
          href="https://fonts.googleapis.com/css2?family=Poppins&display=swap"
          rel="stylesheet"
      >
     <style>
         

:root {
  --background: #121826;
  --primary-item: #FEFEFE;
  --background-item: #121826;
  --background-item-hover: #292F3B;
  --item-non-hover: #FEFEFE;
  --text-link: #C9CDD2;
  --text-link-accent: #DADBDE;
  --line-color: #222836;
}

html {
	font-size: 16px;
	font-family: "Poppins", sans-serif;
}

body {
	background: var(--background);
	height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

* {
  box-sizing: border-box;
}

.dropdown {
  min-width: 10rem;
  width: 100%;
  max-width: 16rem;
  padding: 1rem;
  border-radius: 1rem;
  overflow: hidden;
  background-color: var(
    --background-item
  );
}

.main-item {
  padding: 0.5rem;
  display: flex;
  cursor: pointer;
  align-items: center;
  justify-content: start;
  border-radius: 0.5rem;
  user-select: none;
  font-size: 1rem;
  font-family: 'Poppins', sans-serif;
  gap: 1rem;
  border: none;
  width: 100%;
  background: var(--background-item);
  transition: all ease-in-out 0.25s;
  color: var(--item-non-hover);
}

.main-item:hover {
  background-color: var(
    --background-item-hover
  );
  color: var(--item-non-hover);
}

.main-item svg {
  stroke: var(--item-non-hover);
  transition: all ease-in-out 0.25s;
}

.main-item:hover svg {
  stroke: var(--primary-item);
}

.main-item--open {
  border-radius: 8px;
  transition: all 200ms;
  color: var(--primary-item);
}

.main-item--open:hover {
  color: var(--primary-item);
  border-radius: 8px;
  background-color: var(
    --background-item-hover);
}

.main-item--open svg {
  stroke: var(--primary-item);
}

.dropdown > ul {
  max-height: 0;
  list-style-type: none;
  margin: 0;
  padding-left: 14px;
  opacity: 0;
  font-size: smaller;
  visibility: hidden;
  transition: all ease-in-out 0.2s;
}

.main-item--open + ul {
  visibility: visible;
  max-height: 400px;
  padding-left: 22px;
  opacity: 1;
  display: flex;
  align-items: center;
  flex-direction: column;
}

.dropdown > ul > li {
  height: 48px;
  display: flex;
  width: 100%;
  font-size: 0.9rem;
  align-items: center;
  border-left: 2px solid var(--line-color);
}

.dropdown > ul > li > a {
  color: var(--item-non-hover);
  padding: 1rem 0.75rem;
  height: 2.4rem;
  line-height: 2.4rem;
  display: flex;
  align-items: center;
  text-decoration: none;
  border-radius: 0.5rem;
  margin-left: 1rem;
  width: 100%;
}

.dropdown > ul > li:hover {
  color: var(--primary-item);
  cursor: pointer;
}

.dropdown > ul > l.........完整代码请登录后点击上方下载按钮下载查看