css固定水平垂直居中对齐弹出层效果代码-html代码-BFW代码库

css固定水平垂直居中对齐弹出层效果代码

代码语言：html

所属分类：弹出层

代码描述：css固定水平垂直居中对齐弹出层效果代码

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>
#new:checked ~ .popup {
  /* Center styles */
  inset: 0;
  margin: auto;
  /* End Center styles */
}

#old:checked ~ .popup {
  /* Center styles */
  left: 50%;
  top: 50%;
  transform: translatex(-50%) translatey(-50%);
  /* End Center styles */
}

#new:checked ~ .popup .popup-title::before {
  content: "新的 ";
}
#new:checked ~ .popup .code::before {
  content: ".popup { \a   position: fixed; \a   inset: 0; \a   margin: auto; \a\a   width: fit-content; \a   height: fit-content; \a}";
  white-space: pre;
}

#old:checked ~ .popup {
  border-color: #8bc34a;
}
#old:checked ~ .popup .popup-title::before {
  content: "旧的 ";
}
#old:checked ~ .popup .code::before {
  content: ".popup { \a   position: fixed; \a   left: 50%; \a   top: 50%; \a   transform: translatex(-50%) translatey(-50%); \a\a   width: fit-content; \a   height: fit-content; \a}";
  white-space: pre;
}

html {
  font-family: monospace, arial;
  font-size: clamp(1rem, 3vw, 2rem);
  max-width: 1000px;
  margin-inline: auto;
  color: #333;
  background-color: #ddd;
}

body {
  padding: 30px;
}

.popup {
  position: fixed;
  background-color: #fff;
  padding: 20px;
  border: solid 4px #e91e63;
  border-radius: 10px;
  box-sizing: border-box;
  width: fit-content;
  height: fit-content;
  max-width: 80vw;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  box-shadow: 0 0 0 100vmax rgba(0, 0, 0, 0.5);
  /* firefox prefixes */
  width: -moz-fit-content;
  height: -moz-fit-content;
}

.code {
  padding: 20px;
  background-color: #dedede;
  flex: 1;
  overflow: auto;
  font-size: clamp(0.8rem, 3vw, 25px);
}

.popup-title {
  font-weight: bold;
  margin-bottom: 10px;
  font-size: clamp(1rem, 3vw, 1.2rem);
}

/* side form */
input {
  display: block;
  padding: 5px;
  border: solid 1px rgba(136, 136, 136, 0.7);
  border-radius: 4px;
  background-color: rgba(255, 221, 64, 0.8);
  margin-right: 5px;
}

label {
  display: block;
  padding: 10px;
  padding-left: 30px;
  border-radius: 4px;
  background-color: rgba(255, 221, 64, 0.8);
  font-size: 16px;
  font-family: arial;
}

.new,
.old {
  position: relative;
}

#old {
  posi.........完整代码请登录后点击上方下载按钮下载查看