适用于各种小程序及uniapp
button {
position: relative;
display: block;
padding: 0;
margin: 0;
border: none;
line-height: auto;
box-sizing: border-box;
text-align: center;
text-decoration: none;
-webkit-tap-highlight-color: transparent;
overflow: hidden;
color: #000000;
background: none;
}
button::after {
border: none;
}
