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拖动的页面 滚动导航固定上方

程序员文章站 2022-03-03 21:57:49
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拖动的页面 滚动导航固定上方
拖动的页面 滚动导航固定上方

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="UTF-8">
  5. <title>Title</title>
  6. <style>
  7. *{
  8. margin: 0;
  9. padding: 0;
  10. }
  11. .bg-img{
  12. background: url("http://9yin2.woniu.com/static/web201703/images/bg.jpg") center top repeat;
  13. width: 100%;
  14. height: 1080px;
  15. }
  16. .top-p{
  17. width: 100%;
  18. height: 130px;
  19. background: rgba(30, 33, 35,0.8);
  20. }
  21. .w-100{
  22. width: 100%;
  23. }
  24. .op-02{
  25. opacity: 0.2;
  26. }
  27. .white{
  28. color: white;
  29. }
  30. .d-flex{
  31. display: flex;
  32. }
  33. .just-btw{
  34. justify-content: space-between;
  35. }
  36. .just-round{
  37. justify-content: space-around;
  38. }
  39. .just-center{
  40. justify-content: center;
  41. }
  42. .pd-1{
  43. padding: 5px;
  44. }
  45. .pd-2{
  46. padding: 10px;
  47. }
  48. .pd-3{
  49. padding: 15px;
  50. }
  51. .pd-4{
  52. padding: 20px;
  53. }
  54. .pd-5{
  55. padding: 25px;
  56. }
  57. .pd-6{
  58. padding: 30px;
  59. }
  60. .mr-1{
  61. margin: 5px;
  62. }
  63. .mr-2{
  64. margin: 10px;
  65. }
  66. .mr-3{
  67. margin: 15px;
  68. }
  69. .mr-4{
  70. margin: 20px;
  71. }
  72. .mr-5{
  73. margin: 25px;
  74. }
  75. .mr-6{
  76. margin: 30px;
  77. }
  78. .f-size-14{
  79. font-size: 14px;
  80. }
  81. .f-size-16{
  82. font-size: 16px;
  83. }
  84. .f-size-18{
  85. font-size: 18px;
  86. }
  87. .f-size-20{
  88. font-size: 20px;
  89. }
  90. .f-size-12{
  91. font-size: 12px;
  92. }
  93. .cursor{
  94. cursor:pointer;
  95. }
  96. .inde{
  97. z-index: -1;
  98. }
  99. .new-box{
  100. width: 100%;
  101. height: 1072px;
  102. display: block;
  103. background: url("http://9yin2.woniu.com/static/web201703/images/p2_bg.jpg") center top repeat;
  104. }
  105. .feature-box{
  106. width: 100%;
  107. height: 1113px;
  108. background: url("http://9yin2.woniu.com/static/web201703/images/p3_bg.jpg") center top repeat;
  109. }
  110. .w-1200{
  111. width: 1200px;
  112. }
  113. .m-center{
  114. margin: 10px auto;
  115. }
  116. .pos-abv{
  117. position: absolute;
  118. }
  119. </style>
  120. </head>
  121. <body>
  122. <div id="top"><img src="http://9yin.woniu.com/static/web201588/images/bg.jpg?v1" alt=""></div>
  123. <section class="pos-abv w-100" id="nav">
  124. <div class="d-flex just-btw w-100 top-p">
  125. <div><img src="http://9yin2.woniu.com/static/web201703/images/logo.png" alt=""></div>
  126. <div class="d-flex just-round f-size-18 white">
  127. <div class="mr-4 cursor">
  128. <p class="">官网首页</p><p>HOME</p>
  129. </div>
  130. <div class="mr-4 cursor">
  131. <p>新闻资讯</p><p>NEWS</p>
  132. </div>
  133. <div class="mr-4 cursor">
  134. <p>研发手札</p><p>DEV SKETCH</p>
  135. </div>
  136. <div class="mr-4 cursor">
  137. <p>官方论坛</p><p>FORUM</p>
  138. </div>
  139. <div class="mr-4 cursor">
  140. <p>蜗牛游戏</p><p>GAME</p>
  141. </div>
  142. </div>
  143. </div>
  144. <div>
  145. <div>
  146. <img src="http://9yin2.woniu.com/static/web201703/images/slogan.png" alt="">
  147. </div>
  148. </div>
  149. </section>
  150. <div id="myMain">
  151. <section class="bg-img"></section>
  152. <section class="new-box">
  153. <div class="w-1200 m-center pd-6">
  154. <img src="https://img.php.cn/upload/image/136/485/911/1638173810418146.gif" alt="">
  155. </div>
  156. </section>
  157. <section class="feature-box">
  158. <div class="w-1200 m-center pd-6 w">
  159. <img src="https://img.php.cn/upload/image/407/312/793/1638173840327201.gif" alt="">
  160. </div>
  161. </section>
  162. </div>
  163. <script>
  164. window.onload = function (){
  165. var top =document.getElementById('top')
  166. var myMain =document.getElementById('myMain')
  167. var nav = document.getElementById('nav')
  168. window.onscroll = function (){
  169. if (document.documentElement.scrollTop>=top.offsetHeight){
  170. nav.style.cssText="position:fixed;top:0px;";
  171. }else {
  172. nav.style.cssText="position:static;";
  173. myMain.style.marginTop ='0px';
  174. }
  175. }
  176. }
  177. </script>
  178. </body>
  179. </html>

图片占位
拖动的页面 滚动导航固定上方
拖动的页面 滚动导航固定上方