添加css样式

a:link {
  text-decoration: none;
  color: #cc850a;
}

a:visited {
  text-decoration: none;
  color: #cc850a;
}

a:hover {
  text-decoration: none;
  color: #47a1ad;
}

a:active {
  text-decoration: none;
}

Just

<Link
   to={`$path`}
   style={{ borderBottom: "none" }}> 
    .... 
</Link>

/ / CSS

.navigation_bar > ul > li {
      list-style: none;
      display: inline;
      margin: 2%;
    }

    .link {
      text-decoration: none;
    }

.jsx

 <div className="navigation_bar">
            <ul key="nav">
              <li>
                <Link className="link" to="/">
                  Home
                </Link>
              </li>
            </ul>
          </div>

这很简单。只需在<Link>标签内添加style={{textDecoration: 'none'}}

<Link to="first" style={{ textDecoration: 'none' }}>
   <MenuItem style={{ paddingLeft: 13 }}>
         Team 1
   </MenuItem>

如果你正在使用样式化组件，你可以这样做:

import React, { Component } from 'react';
import { Link } from 'react-router-dom';
import styled from 'styled-components';


const StyledLink = styled(Link)`
    text-decoration: none;

    &:focus, &:hover, &:visited, &:link, &:active {
        text-decoration: none;
    }
`;

export default (props) => <StyledLink {...props} />;

<Link to="/page">
    <Box sx={{ display: 'inline-block' }}>
        <PLink variant="primary">Page</PLink>
    </Box>
</Link>

在某些情况下，当在Gatsby <Link>组件中使用另一个组件时，在内部组件周围添加带有display: 'inline-block'的div，可以防止下划线(在示例中为'Page')。