| 12345678910111213141516171819202122232425262728 |
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- <style>
- .box1{
- width: 400px;
- height: 400px;
- background-color: blue;
- }
- .box2{
- width: 0;
- height: 0;
- border-top: 100px solid red;
- border-left: 100px solid transparent;
- /* border-right: 100px solid yellow; */
- /* border-bottom: 100px solid purple; */
- }
- </style>
- </head>
- <body>
- <div class="box1">
- <div class="box2"></div>
- </div>
- </body>
- </html>
|
