1. 将 .content 的 margin-bottom 设为负数
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <meta http-equiv="X-UA-Compatible" content="ie=edge" /> <title>Sticky Footer</title> <style> html, body { margin: 0; padding: 0; height: 100%; text-align: center; } .content { min-height: 100%; margin-bottom: -50px; /* 等于 .footer 高度的相反数 */ } .content-inside { background-color: #c2ffa9; } .push { height: 50px; /* .push 是额外的占位元素，高度与 .footer 一致 */ } .footer { height: 50px; line-height: 50px; /* 实现文字垂直居中 */ background-color: #3ba4f9; } </style> </head> <body> <div class="content"> <!-- div.content-inside 的高度可以随意设置，亦可根据内容高度自适应 --> <div class="content-inside"> <!-- content --> <div>Content</div> <div>Content</div> <div>Content</div> </div> <!-- div.push 是额外的占位元素，高度与 div.footer 一致 --> <div class="push"></div> </div> <div class="footer">Sticky Footer</div> </body> </html>
2. 将 .footer 的 margin-top 设为负数
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <meta http-equiv="X-UA-Compatible" content="ie=edge" /> <title>Sticky Footer</title> <style> html, body { margin: 0; padding: 0; height: 100%; text-align: center; } .content { min-height: 100%; } .content-inside { background-color: #c2ffa9; } .footer { height: 50px; line-height: 50px; /* 实现文字垂直居中 */ background-color: #3ba4f9; margin-top: -50px; /* 等于 .footer 高度的相反数 */ } </style> </head> <body> <div class="content"> <!-- div.content-inside 的高度可以随意设置，亦可根据内容高度自适应 --> <div class="content-inside"> <!-- content --> <div>Content</div> <div>Content</div> <div>Content</div> </div> </div> <div class="footer">Sticky Footer</div> </body> </html>
3. 使用 calc() 设置 .content 的高度
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <meta http-equiv="X-UA-Compatible" content="ie=edge" /> <title>Sticky Footer</title> <style> html, body { margin: 0; padding: 0; height: 100%; text-align: center; } .content { /* 如果 .content 与 .footer 之间有间距，记得减去 */ min-height: calc(100vh - 50px); } .content-inside { background-color: #c2ffa9; } .footer { height: 50px; line-height: 50px; /* 实现文字垂直居中 */ background-color: #3ba4f9; } </style> </head> <body> <div class="content"> <div class="content-inside"> <!-- content --> <div>Content</div> <div>Content</div> <div>Content</div> </div> </div> <div class="footer">Sticky Footer</div> </body> </html>
4. 使用 Flexbox 弹性布局
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <meta http-equiv="X-UA-Compatible" content="ie=edge" /> <title>Sticky Footer</title> <style> html, body { margin: 0; padding: 0; height: 100%; text-align: center; } body { min-height: 100%; display: flex; flex-direction: column; } .content { flex: 1; } .content-inside { background-color: #c2ffa9; } .footer { /* 这种方案不需要固定 .footer 的高度 */ background-color: #3ba4f9; } </style> </head> <body> <div class="content"> <div class="content-inside"> <!-- content --> <div>Content</div> <div>Content</div> <div>Content</div> </div> </div> <div class="footer">Sticky Footer</div> </body> </html>
5. 使用 Grid 网格布局
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <meta http-equiv="X-UA-Compatible" content="ie=edge" /> <title>Sticky Footer</title> <style> html, body { margin: 0; padding: 0; height: 100%; text-align: center; } body { min-height: 100%; display: grid; grid-template-rows: 1fr auto; } .content-inside { background-color: #c2ffa9; } .footer { grid-row-start: 2; grid-row-end: 3; background-color: #3ba4f9; } </style> </head> <body> <div class="content"> <div class="content-inside"> <!-- content --> <div>Content</div> <div>Content</div> <div>Content</div> </div> </div> <div class="footer">Sticky Footer</div> </body> </html>