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HTML 

              
                <!DOCTYPE html>
<html lang="en"> 
 <html dir="rtl" >
<head>
  <title>Bootstrap 4 Buttons</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
</head>
<body>

<div class="container"align="right"> 
   <br></br>
  <h2>Button Styles</h2>
  <p>استایل های مختلف در بوت استرپ ۴</p>
  <button type="button" class="btn">Basic</button>
  <button type="button" class="btn btn-primary">Primary</button>
  <button type="button" class="btn btn-secondary">Secondary</button>
  <button type="button" class="btn btn-success">Success</button>
  <button type="button" class="btn btn-info">Info</button>
  <button type="button" class="btn btn-warning">Warning</button>
  <button type="button" class="btn btn-danger">Danger</button>
  <button type="button" class="btn btn-dark">Dark</button>
  <button type="button" class="btn btn-light">Light</button>
  <button type="button" class="btn btn-link">Link</button>  
  <br></br>
    <br></br>
  <h2>Button Elements</h2>
   <p>استفاده از کلاس های دکمه به همراه تگ های <code>a</code> , <code>button </code>و <code>input</code></P>
  <a href="#" class="btn btn-info" role="button">Link Button</a>
  <button type="button" class="btn btn-info">Button</button>
  <input type="button" class="btn btn-info" value="Input Button">
  <input type="submit" class="btn btn-info" value="Submit Button">
    <br></br>
    <br></br>
<h2>Button Outline</h2>
  <p>بوت استرپ ۴ برای دکمه های حاشیه دار ۸ طرح را ارائه می نماید.</p>
  <button type="button" class="btn btn-outline-primary">Primary</button>
  <button type="button" class="btn btn-outline-secondary">Secondary</button>
  <button type="button" class="btn btn-outline-success">Success</button>
  <button type="button" class="btn btn-outline-info">Info</button>
  <button type="button" class="btn btn-outline-warning">Warning</button>
  <button type="button" class="btn btn-outline-danger">Danger</button>
  <button type="button" class="btn btn-outline-dark">Dark</button>
  <button type="button" class="btn btn-outline-light text-dark">Light</button>
  <br></br>
 <br></br>
  <h2>Button Sizes</h2>
<p>از <code>btn-lg.</code> برای دکمه های بزرگ و <code>btn-sm.</code> برای دکمه های کوچک استفاده کنید.</P>
  <button type="button" class="btn btn-primary btn-lg">Large</button>
  <button type="button" class="btn btn-primary btn-md">Default</button>    
  <button type="button" class="btn btn-primary btn-sm">Small</button>
 <br></br>
 <br></br>
  <h2>Block Level Buttons</h2>
<p>از کلاس <code>btn-block.</code> برای ایجاد دکمه با سایز بلاک و برابر استفاده کنید.</p>
 <br>
  <h4>Large</h4>
  <button type="button" class="btn btn-primary btn-lg btn-block">Button 1</button>
  <button type="button" class="btn btn-success btn-lg btn-block">Button 2</button>
 
  <br>
  <h4>Normal</h4>
  <button type="button" class="btn btn-primary btn-block">Button 1</button>
  <button type="button" class="btn btn-success btn-block">Button 2</button>
  <br>
  
  <h4>Small</h4>
  <button type="button" class="btn btn-primary btn-sm btn-block">Button 1</button>
  <button type="button" class="btn btn-success btn-sm btn-block">Button 2</button>
 <br></br>
 <br></br>
  <h2>Button States</h2>
<p>از کلاس <code>active.</code> برای نمایش یک دکمه در حالت فشرده و از ویژگی <code>disabled</code> برای غیرقابل کلیک کردن آن استفاده کنید.
<br>
توجه داشته باشید تگ <code>a</code> از ویژگی <code>disabled</code> پشتیبانی نمی کند پس باید از کلاس <code>disabled.</code> استفاده کنید.</p>
  <button type="button" class="btn btn-primary">Primary Button</button>
  <button type="button" class="btn btn-primary active">Active Primary</button>
  <button type="button" class="btn btn-primary" disabled>Disabled Primary</button>
  <a href="#" class="btn btn-primary disabled">Disabled Link</a>
 <br></br>
 <br></br>
  <h2>Spinner Buttons</h2>
  <p>استفاده از حالت اسپینر </p>
                                        
  <button class="btn btn-primary">
    <span class="spinner-border spinner-border-sm"></span>
  </button>

  <button class="btn btn-primary">
    <span class="spinner-border spinner-border-sm"></span>
    Loading..
  </button>
  
  <button class="btn btn-primary" disabled>
    <span class="spinner-border spinner-border-sm"></span>
    Loading..
  </button>
  
  <button class="btn btn-primary" disabled>
    <span class="spinner-grow spinner-grow-sm"></span>
    Loading..
  </button>
 <br></br>
 <br></br>
</div>
</body>
</html>
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