Bootstrap_栅格系统_注意事项与Bootstrap_全局CSS样式_按钮&图片
Bootstrap_栅格系统_注意事项
栅格系统_注意事项:
1.一行中如果格子数目超过12,则超出部分自动换行
2.栅格类属性可以向上兼容。栅格类适用于与屏幕宽度大于或等于分界点大小的设备
3.如果真实设备宽度小于了设置栅格类属性的设备代码的最小值,会一个元素沾满一整行
Bootstrap_全局CSS样式_按钮&图片
全局CSS样式
按钮:class="btn btn-default"
图片
img-responsive:在任意尺寸都占100%
<img src="..." alt="..." class="img-rounded">:方形
<img src="..." alt="..." class="img-circle"> 椭圆形
<img src="..." alt="..." class="img-thumbnail">:相框形
<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! --> <title>Bootstrap HelloWorld</title> <!-- Bootstrap --> <link href="css/bootstrap.min.css" rel="stylesheet"> <!-- jQuery (Bootstrap 的所有 JavaScript 插件都依赖 jQuery,所以必须放在前边) --> <script src="js/jquery-3.2.1.min.js"></script> <!-- 加载 Bootstrap 的所有 JavaScript 插件。你也可以根据需要只加载单个插件。 --> <script src="js/bootstrap.min.js"></script> <style> </style> </head> <body> <a class="btn btn-default" href="#" >Link</a> <button class="btn btn-default" type="submit">Button</button> <input class="btn btn-default" type="button" value="Input"> <input class="btn btn-default" type="submit" value="Submit"> <br> <!-- Standard button --> <button type="button" class="btn btn-default">(默认样式)Default</button> <!-- Provides extra visual weight and identifies the primary action in a set of buttons --> <button type="button" class="btn btn-primary">(首选项)Primary</button> <!-- Indicates a successful or positive action --> <button type="button" class="btn btn-success">(成功)Success</button> <!-- Contextual button for informational alert messages --> <button type="button" class="btn btn-info">(一般信息)Info</button> <!-- Indicates caution should be taken with this action --> <button type="button" class="btn btn-warning">(警告)Warning</button> <!-- Indicates a dangerous or potentially negative action --> <button type="button" class="btn btn-danger">(危险)Danger</button> <!-- Deemphasize a button by making it look like a link while maintaining button behavior --> <button type="button" class="btn btn-link">(链接)Link</button> <br> <img src="img/a.jpg" class="img-responsive"> <img src="img/a.jpg" class="img-responsive img-rounded"> <img src="img/a.jpg" class="img-responsive img-circle"> <img src="img/a.jpg" class="img-responsive img-thumbnail"> </body> </html>