position: fixed在大多数的旧版本中不工作iOS和BlackBerry。我已经在大多数移动浏览器中尝试了此修复程序，并且没有任何JavaScript插件即可正常运行。
.fixed {
position: fixed;
top: 0px;
left: 0px;
width: 320px;
height: 50px;
background: red;
-webkit-backface-visibility: hidden;
/*--^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Most Important*/
}
<div class="fixed">
Hi I m Position Fixed
</div>
<div>
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</div>
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