演示区域

由于我的网站上经常要使用到一些展示效果，为了和其它正文内容块做区分，特地设计和封装了一个演示区域的组件。

DEMO

点击

代码实现

JSX

import React from 'react';

export default function DemoArea({ title, children }) {
  const demoTitle = title || "DEMO"
  return (
    <div className='demoArea'>
      <div className='demoRibbon'>
        <span className='demoTitle'>{demoTitle}</span>
      </div>
      <div className='demoContent'>{children}</div>
    </div>
  )
}

CSS

.demoArea {
  position: relative;
  border: 2px solid #ebedf0;
  border-radius: 0.4rem;
  margin: 40px 0 20px;
}
.demoRibbon {
  height: 8rem;
  width: 8rem;
  overflow: hidden;
  position: absolute;
  z-index: 1;
  top: -0.5rem;
  right: -0.5rem;
}
.demoTitle {
  background-color: #6366f1;
  color: #fff;
  padding: 0.5rem 0;
  position: absolute;
  text-transform: uppercase;
  text-align: center;
  width: 181px;
  display: block;
  letter-spacing: 0.15rem;
}
.demoRibbon .demoTitle {
  transform: translate(-13px, 30px) rotate(45deg);
}
.demoRibbon::before, .demoRibbon::after {
  border: .25rem solid #4338ca;
  border-top-color: transparent;
  border-right-color: transparent;
  content: "";
  position: absolute;
  z-index: -1;
}
.demoRibbon::before {
  top: 0;
  left: 0;
}
.demoRibbon::after {
  bottom: 0;
  right: 0;
}
.demoContent {
  padding: 1rem;
  min-height: 10rem;
  display: flex;
  align-items: center;
  justify-content: center;
}