1. 使用類名

```css

.link-style a {

color: blue;

font-size: 16px;

font-weight: bold;

text-decoration: none;

border: none;

padding: 10px 20px;

2. 使用屬性

```css

.link-style a {

color: blue;

font-size: 16px;

font-weight: bold;

text-decoration: none;

border: none;

padding: 10px 20px;

color: #f00;

3. 使用偽類

```css

.link-style a {

color: blue;

font-size: 16px;

font-weight: bold;

text-decoration: none;

border: none;

padding: 10px 20px;

display: inline-block;

.link-style a:hover {

color: #007bff;

.link-style a:visited {

color: #0069d9;