关于CSS布局技巧的总结分享
单列布局
水平居中
父元素text-align:center;子元素:inline-block;
优点:兼容性好;
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不足:需要同时设置子元素和父元素
<!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>水平居中1</title> <style> .parent { width: 500px; height: 400px; background: red; text-align: center; } .child { display: inline-block; width: 300px; height: 100px; background: blue; } </style> </head> <body> <p class="parent"> <p class="child"></p> </p> </body> </html>
子元素margin:0 auto;
优点:兼容性好
缺点:需要指定宽度
<!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>水平居中1</title> <style> .parent { width: 500px; height: 400px; background: red; } .child { width: 300px; height: 100px; background: blue; margin:0 auto; } </style> </head> <body> <p class="parent"> <p class="child"></p> </p> </body> </html>
子元素{display:table;margin:0 auto;}
优点:只需要对自身进行设置
不足:IE6,7需要调整结构
<!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>水平居中1</title> <style> .parent { width: 500px; height: 400px; background: red; } .child { width: 300px; height: 100px; background: blue; margin:0 auto; display:table;margin:0 auto;s } </style> </head> <body> <p class="parent"> <p class="child"></p> </p> </body> </html>
父元素:relative;子元素:absolute;left:50%;margin-left:-宽度的一半
优点:兼容性好
缺点:需要知道子元素的宽度
<!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>水平居中1</title> <style> .parent { width: 500px; height: 400px; background: red; position: relative; top: 0; left: 0; } .child { width: 300px; height: 100px; background: blue; position: absolute; top: 0; left: 50%; margin-left: -150px; } </style> </head> <body> <p class="parent"> <p class="child"></p> </p> </body> </html>
父元素:relative;子元素:absolute;left:50%;transform:translate(-50%,0);
优点:兼容性差
缺点:不需要知道子元素的宽度
<!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>水平居中1</title> <style> .parent { width: 500px; height: 400px; background: red; position: relative; top: 0; left: 0; } .child { width: 300px; height: 100px; background: blue; position: absolute; top: 0; left: 50%; transform: translate(-50%,0); } </style> </head> <body> <p class="parent"> <p class="child"></p> </p> </body> </html>
弹性盒子:父元素:display:flex;justify-content:center;
优点:简单
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缺点:兼容性差
<!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>水平居中1</title> <style> .parent { width: 500px; height: 400px; background: red; display: flex; justify-content: center; } .child { width: 300px; height: 100px; background: blue; } </style> </head> <body> <p class="parent"> <p class="child"></p> </p> </body> </html>
垂直居中
vertical-align:center;
<!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>水平居中1</title> <style> .parent { width: 500px; height: 400px; background: red; display:table-cell; vertical-align:middle; } .child { width: 300px; height: 100px; background: blue; } </style> </head> <body> <p class="parent"> <p class="child"></p> </p> </body> </html>
<!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>垂直居中1</title> <style> .parent { width: 500px; height: 400px; background: red; vertical-align:middle; line-height:450px; } .child { width: 300px; height: 100px; background: blue; display:inline-block; } </style> </head> <body> <p class="parent"> <p class="child"></p> </p> </body> </html> <!-- 这种方法需要知道父元素和子元素的高度,父元素的line-height的值为父元素高度减去子元素高度的一半。-->
父元素:position:relative;子元素:positon:absolute;top:50%;transform:translate(0,-50%);
<!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>垂直居中1</title> <style> .parent { width: 500px; height: 400px; background: red; position: relative; top: 0; left: 0; } .child { width: 300px; height: 100px; background: blue; position: absolute; top: 50%; left:0; transform: translate(0,-50%); } </style> </head> <body> <p class="parent"> <p class="child"></p> </p> </body> </html>
父元素:position:relative;子元素:positon:absolute;top:50%;margin-top:-子元素高度的一半;
父元素:display:flex;align-items:center;
<!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>垂直居中1</title> <style> .parent { width: 500px; height: 400px; background: red; display: flex; align-items: center; } .child { width: 300px; height: 100px; background: blue; } </style> </head> <body> <p class="parent"> <p class="child"></p> </p> </body> </html>
水平垂直居中
父元素:display:table-cell;vertical-align:middle;text-align:center;
子元素;display:inline-block;
<!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>垂直居中1</title> <style> .parent { width: 500px; height: 400px; background: red; display:table-cell; vertical-align:middle; text-align:center; } .child { width: 300px; height: 100px; background: blue; display: inline-block; } </style> </head> <body> <p class="parent"> <p class="child"></p> </p> </body> </html>
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父元素:position:relative;
子元素:position:absolute以上就是关于CSS布局技巧的总结分享的详细内容,更多请关注其它相关文章!
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