11.简单的CSS按钮悬停特效

效果

源码

	
	


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css

@import url('https://fonts.googleapis.com/css?family=Poppins:200,300,400,500,600,700,800,900&display=swap');
*
{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}
body 
{
	display: flex;
	justify-content: center;
	align-items: center;
	flex-direction: column;
	min-height: 100vh;
	gap: 30px;
}
div 
{
	display: flex;
	gap: 30px;
}
a 
{
	position: relative;
	b