1 <!DOCTYPE html> 2 <html lang="en"> 3 4 <head> 5 <meta charset="UTF-8"> 6 <meta name="viewport" content="width=device-width, initial-scale=1.0"> 7 <meta http-equiv="X-UA-Compatible" content="ie=edge"> 8 <title>Document</title> 9 <style> 10 body { 11 text-align: center; 12 color: #fff; 13 line-height: 80px; 14 } 15 16 h1 { 17 /* inline不能设置宽高,没有 */ 18 /* display: inline; 19 height: 20px; 20 padding: 10%; */ 21 22 /* display-inline 我们称之为行内块，可以设置宽高，拥有一切属性 */ 23 /* display: inline-block; 24 height: 30px; */ 25 26 /* display: block 块级元素，占满一行 */ 27 display: block; 28 width: 80px; 29 height: 80px; 30 background-color: #000; 31 } 32 33 h2 { 34 display: inline-block; 35 width: 80px; 36 height: 80px; 37 background-color: #000; 38 /* text-align: center; */ 39 } 40 41 h3 { 42 display: inline; 43 width: 80px; 44 height: 80px; 45 46 background-color: #000; 47 } 48 </style> 49 </head> 50 51 <body> 52 <h1>块级元素</h1> 53 <h2>行间块</h2> 54 <br> 55 <h3>行内(没有宽高，我能怎么办)</h3> 56 </body> 57 58 </html>