开源教程在线编辑器

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>开源教程(ossoft.cn)</title> 
<style>
.button {
    background-color: #4CAF50; /* Green */
    border: none;
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
}

.button1 {
    background-color: white; 
    color: black; 
    border: 2px solid #4CAF50;
}

.button2 {
    background-color: white; 
    color: black; 
    border: 2px solid #008CBA;
}

.button3 {
    background-color: white; 
    color: black; 
    border: 2px solid #f44336;
}

.button4 {
    background-color: white;
    color: black;
    border: 2px solid #e7e7e7;
}

.button5 {
    background-color: white;
    color: black;
    border: 2px solid #555555;
}
</style>
</head>
<body>

<h2>按钮边框颜色</h2>
<p>我们可以使用 border 属性设置按钮边框颜色:</p>

<button class="button button1">Green</button>
<button class="button button2">Blue</button>
<button class="button button3">Red</button>
<button class="button button4">Gray</button>
<button class="button button5">Black</button>

</body>
</html>