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伪类选择器+盒子模型属性

P粉116103988
P粉116103988原创
2022年07月10日 21:26:17318浏览

伪类选择器

效果图如下:

代码如下:

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="UTF-8">
  5. <meta http-equiv="X-UA-Compatible" content="IE=edge">
  6. <meta name="viewport" content="width=device-width, initial-scale=1.0">
  7. <title>伪类选择器</title>
  8. </head>
  9. <style>
  10. div{
  11. font-size:1em;
  12. }
  13. /* 选中第二个li */
  14. .list >li:nth-of-type(2){
  15. color: red;
  16. }
  17. .list >ol>li{
  18. font-size:0.5em;
  19. color: blueviolet;
  20. }
  21. /* 选中后3个LI */
  22. .list > li:nth-last-of-type(-n+3){
  23. color: blue;
  24. }
  25. /* 奇数行 */
  26. .list >li:nth-of-type(2n-1){
  27. color:palevioletred;
  28. }
  29. input:disabled{
  30. color: red;
  31. border: none;
  32. }
  33. input:checked + label{
  34. color: blue;
  35. }
  36. button{
  37. border: none;
  38. background-color: green;
  39. font-size: 1em;
  40. color: aliceblue;
  41. padding: 5px;
  42. width: 60px;
  43. }
  44. button:hover{
  45. background-color: red;
  46. cursor: pointer;
  47. }
  48. </style>
  49. <body>
  50. <div class="text1">
  51. <ul class="list">
  52. <li class="first">item1</li>
  53. <li>item2</li>
  54. <li>item3</li>
  55. <ol>
  56. <li>zi1</li>
  57. <li>zi2</li>
  58. <li>zi3</li>
  59. </ol>
  60. <li>item4</li>
  61. <li>item5</li>
  62. <li>item6</li>
  63. <li>item7</li>
  64. <li>item8</li>
  65. </ul>
  66. </div>
  67. <div class="text2">
  68. <form action="">
  69. <legend>用户注册</legend>
  70. <div>
  71. <label for="user">姓名:</label>
  72. <input type="text" id="user" class="username" placeholder="请输入您的姓名">
  73. </div>
  74. <div>
  75. <label for="zy">注意:</label>
  76. <input type="text" id="zy" value="用户名必须实名" disabled>
  77. </div>
  78. <div>
  79. <label for="m">学历:</label>
  80. <select name="xl" id="">
  81. <option value="0" disabled >请选择</option>
  82. <option value="1">中学</option>
  83. <option value="2">大学</option>
  84. </select>
  85. </div>
  86. <div>
  87. <label for="m">性别:</label>
  88. <input type="radio" name="sex" id="m" value="0" checked />
  89. <label for="m"></label>
  90. <input type="radio" name="sex" id="wm" value="1" />
  91. <label for="wm"></label>
  92. </div>
  93. <button>提交</button>
  94. </form>
  95. </div>
  96. </body>
  97. </html>

盒子模型常用属性:

效果图如下:

代码如下:

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="UTF-8">
  5. <meta http-equiv="X-UA-Compatible" content="IE=edge">
  6. <meta name="viewport" content="width=device-width, initial-scale=1.0">
  7. <title>盒模型</title>
  8. <style>
  9. *{
  10. margin: 0;
  11. padding: 0;
  12. box-sizing: border-box;
  13. }
  14. /* 盒模型常用属性:padding,margin,border等 */
  15. .text1{
  16. width: 150px;
  17. height: 150px;
  18. background-color: pink;
  19. padding: 5px 10px 5px 8px;
  20. }
  21. .text2{
  22. background-color: rgb(158, 231, 158);
  23. border: 5px solid #000;
  24. border-radius: 5px;
  25. height: 100px;
  26. line-height: 100px;
  27. width: 100px;
  28. text-align: center;
  29. margin-top: 15px;
  30. margin-left: 15px;
  31. }
  32. </style>
  33. </head>
  34. <body>
  35. <div class="text1">
  36. <div class="text2">div</div>
  37. </div>
  38. </body>
  39. </html>
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