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实例演示：模态框
千
Original
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代码

html

  1. <body>
  2.     <header>
  3.         <h1 class="title">千千的博客</h1>
  4.         <button onclick="showModal()">登录</button>
  5.     </header>
  7.     <!-- 模态框 -->
  8.     <div class="modal">
  9.         <!-- 1.半透明的遮罩 -->
  10.         <div class="modal-bg" onclick="closeModal()"></div>
  12.         <form action="" class="modal-form">
  13.             <fieldset style="display: grid; gap: 1em">
  14.                 <legend>用户登录</legend>
  15.                 <input type="email" name="email" placeholder="user@email.com" />
  16.                 <input type="password" name="password" placeholder="不少于6位" />
  17.                 <button>登录</button>
  18.             </fieldset>
  19.         </form>
  20.     </div>
  21.     <script src="modal.js"></script>
  22. </body>

css样式

<link rel="stylesheet" href="modaltext.css">

  1. /* 初始化 */
  2. *{
  3.     margin: 0;
  4.     padding: 0;
  5.     box-sizing: border-box;
  6. }
  7. /* 头部 */
  8. header{
  9.     background-color: coral;
  10.     padding: 2em 5em;
  11.     display: flex;
  12. }
  13. /* logo */
  14. header .title{
  15.     font-weight:lighter;
  16.     font-style:italic;
  17.     color:grey;
  18.     letter-spacing:50px;
  19.     text-shadow: 1px 1px 1px white  
  20. }
  21. /* 登录按钮 */
  22. header button{
  23.     margin-left: auto;
  24.     margin-top: auto;
  25.     width: 6em;
  26.     height: 2em;
  27.     border: none;
  28.     border-radius:0.5em;
  29. }
  30. header button:hover{
  31.     cursor: pointer;
  32.     background-color: coral;
  33.     color: white;
  34.     box-shadow: 0 0 10px #fff;
  35.     transition: 0.5s;
  36. }
  37. /* 模态框 */
  38. .modal .modal-form fieldset {
  39.     height:15.5em;
  40.     background-color: lightsalmon;
  41.     border: none;
  42.     padding: 2em 3em;
  43.     box-shadow:0 0 10px #888;
  44. }
  45. /* 模态框表单标题 */
  46. .modal .modal-form fieldset legend {
  47.     padding:7px 1.5em;
  48.     color: #fff;
  49.     border:solid white 0.5px;
  50.     background-color: orange;
  51. }
  52. .modal .modal-form fieldset input {
  53.      height:3em;
  54.      padding-left:1em;
  55.      border: 1px solid #DDD;
  56.      outling:none;
  57.      font-size: 14px;
  58. }
  59. /* :focus: 表单控件，获取焦点时的样式 */
  60. .modal .modal-form fieldset input:focus {
  61.     box-shadow:0 0 10px rgb(90, 90, 90);
  62.     border:none;
  63. }
  64. .modal .modal-form fieldset button{
  65.      background-color: orange;
  66.      color:white;
  67.      border:none;
  68.      height:3em;
  69.      font-size:16px;
  70.      height:2.5em;
  71.      box-shadow:0 0 10px white;
  72. }
  73. .modal .modal-form fieldset button:hover{
  74.     background-color:coral;
  75.     /* cursor: 网页浏览时用户鼠标指针的样式或图形形状。pointer：光标为一只手 */
  76.     cursor:pointer;
  77. }
  78. /* 定位 */
  79. .modal .modal-form {
  80.      position:fixed;
  81.      top:10em;
  82.      left:35em;
  83.      right:35em;
  84.  }
  85. /* 遮罩 */
  86. .modal .modal-bg {
  87.     position: fixed;
  88.     /* 坐标全部清零，定位到四个顶点 */
  89.     top: 0;
  90.     left: 0;
  91.     right: 0;
  92.     bottom: 0;
  93.     background-color: rgb(0,0,0,0.5);
  94. }
  95. .modal{
  96.     display:none;
  97. }

效果


Correcting teacher：PHPzPHPz

Correction status：qualified

Teacher's comments：
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