【发布时间】：2021-08-20 21:26:10
【问题描述】：
我不明白我做错了什么（虽然我是后端人员）。在 VueJS 上使用 Tailwind，此菜单不会出现在 DIV 上方。我已经尝试过 z-index 和一切，但没有任何东西可以让它出现。当我尝试将菜单强制到屏幕前面时，它不会出现。我不知道我做错了什么。
<section class="bg-white dark:bg-gray-800 min-w-0 flex-1 h-auto flex flex-col lg:order-last">
<div>
<ul class="divide-y divide-gray-200">
<li class="bg-white py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1480455624313-e29b44bbfde1?ixid=MnwxMjA3fDB8MHxzZWFyY2h8Nnx8bWFsZXxlbnwwfHwwfHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=900&q=60" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50"></p>
</div>
</div>
</div>
</li>
<li class="bg-red-500 bg-opacity-50 text-gray-50 py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1566753323558-f4e0952af115?ixid=MnwxMjA3fDB8MHxzZWFyY2h8MTB8fG1hbGV8ZW58MHx8MHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=900&q=60" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50">whisper</p>
</div>
</div>
</div>
</li>
<li class="bg-green-400 bg-opacity-50 py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1494790108377-be9c29b29330?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=facearea&facepad=2&w=256&h=256&q=80" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50">mention</p>
</div>
</div>
</div>
</li>
<li class="bg-white py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1566753323558-f4e0952af115?ixid=MnwxMjA3fDB8MHxzZWFyY2h8MTB8fG1hbGV8ZW58MHx8MHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=900&q=60" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50"></p>
</div>
</div>
</div>
</li>
<li class="bg-white py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1494790108377-be9c29b29330?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=facearea&facepad=2&w=256&h=256&q=80" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50"></p>
</div>
</div>
</div>
</li>
<li class="bg-red-500 bg-opacity-50 text-gray-50 py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1494790108377-be9c29b29330?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=facearea&facepad=2&w=256&h=256&q=80" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50">whisper</p>
</div>
</div>
</div>
</li>
<li class="bg-white py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1566753323558-f4e0952af115?ixid=MnwxMjA3fDB8MHxzZWFyY2h8MTB8fG1hbGV8ZW58MHx8MHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=900&q=60" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50"></p>
</div>
</div>
</div>
</li>
<li class="bg-green-400 bg-opacity-50 py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1494790108377-be9c29b29330?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=facearea&facepad=2&w=256&h=256&q=80" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50">mention</p>
</div>
</div>
</div>
</li>
<li class="bg-white py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1494790108377-be9c29b29330?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=facearea&facepad=2&w=256&h=256&q=80" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50"></p>
</div>
</div>
</div>
</li>
<li class="bg-white py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1494790108377-be9c29b29330?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=facearea&facepad=2&w=256&h=256&q=80" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50"></p>
</div>
</div>
</div>
</li>
<li class="bg-white py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1494790108377-be9c29b29330?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=facearea&facepad=2&w=256&h=256&q=80" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Leslie Alexander</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50"></p>
</div>
</div>
</div>
</li>
<li class="bg-white py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1480455624313-e29b44bbfde1?ixid=MnwxMjA3fDB8MHxzZWFyY2h8Nnx8bWFsZXxlbnwwfHwwfHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=900&q=60" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50"></p>
</div>
</div>
</div>
</li>
<li class="bg-white py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1480455624313-e29b44bbfde1?ixid=MnwxMjA3fDB8MHxzZWFyY2h8Nnx8bWFsZXxlbnwwfHwwfHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=900&q=60" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50"></p>
</div>
</div>
</div>
</li>
<li class="bg-white py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1480455624313-e29b44bbfde1?ixid=MnwxMjA3fDB8MHxzZWFyY2h8Nnx8bWFsZXxlbnwwfHwwfHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=900&q=60" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50"></p>
</div>
</div>
</div>
</li>
<li class="bg-red-500 bg-opacity-50 text-gray-50 py-4 px-4">
<div class="flex space-x-3">
<img class="h-6 w-6 rounded-full" src="https://images.unsplash.com/photo-1480455624313-e29b44bbfde1?ixid=MnwxMjA3fDB8MHxzZWFyY2h8Nnx8bWFsZXxlbnwwfHwwfHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=900&q=60" alt="">
<div class="flex-1 space-y-1">
<div class="flex items-center justify-between">
<h3 class="text-sm font-medium">Username</h3>
<p class="text-sm text-gray-500">1h</p>
</div>
<div class="flex items-center justify-between">
<p class="text-sm text-gray-500">Deployed Workcation (2d89f0c8 in master) to production</p>
<p class="text-sm bg-blue-500 p-1 rounded text-gray-50">whisper</p>
</div>
</div>
</div>
</li>
</ul>
</div>
</section>
<section aria-labelledby="chat-footer" class="h-auto w-full sticky shadow-2xl bg-gradient-to-br from-gray-100 to-gray-300 dark:from-gray-900 dark:to-gray-900 border-l dark:border-gray-800 border-gray-200 bottom-0 min-w-full flex-1 flex flex-col overflow-hidden lg:order-last">
<div>
<span class="pl-10 pt-2 relative z-0 inline-flex shadow-sm rounded-md">
<button type="button" class="relative inline-flex items-center px-3 py-1 rounded-l-md border border-gray-300 bg-white dark:border-transparent dark:bg-gray-900 text-sm font-medium text-gray-700 hover:bg-gray-50 focus:z-10 focus:outline-none focus:ring-1 focus:ring-indigo-500 focus:border-indigo-500">
<svg
xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" class="w-4 h-4 text-gray-600 dark:text-gray-50">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10 20l4-16m4 4l4 4-4 4M6 16l-4-4 4-4"></path>
</svg>
</button>
<button type="button" class="-ml-px relative inline-flex items-center px-3 py-1 border border-gray-300 bg-white dark:border-transparent dark:bg-gray-900 text-sm font-medium text-gray-700 dark:text-gray-50 hover:bg-gray-50 focus:z-10 focus:outline-none focus:ring-1 focus:ring-indigo-500 focus:border-indigo-500"> YouTube </button>
<button type="button" class="-ml-px relative inline-flex items-center px-3 py-1 border border-gray-300 bg-white dark:border-transparent dark:bg-gray-900 text-sm font-medium text-gray-700 hover:bg-gray-50 focus:z-10 focus:outline-none focus:ring-1 focus:ring-indigo-500 focus:border-indigo-500">
<svg
xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" class="w-4 h-4 text-gray-600 dark:text-gray-50">
<path fill-rule="evenodd" d="M8 4a4 4 0 100 8 4 4 0 000-8zM2 8a6 6 0 1110.89 3.476l4.817 4.817a1 1 0 01-1.414 1.414l-4.816-4.816A6 6 0 012 8z" clip-rule="evenodd"></path>
</svg>
</button>
<button type="button" class="-ml-px relative inline-flex items-center px-3 py-1 border border-gray-300 bg-white dark:border-transparent dark:bg-gray-900 text-sm font-medium text-gray-700 hover:bg-gray-50 focus:z-10 focus:outline-none focus:ring-1 focus:ring-indigo-500 focus:border-indigo-500">
<svg
xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" class="w-4 h-4 text-gray-600 dark:text-gray-50">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-8l-4-4m0 0L8 8m4-4v12"></path>
</svg>
</button>
<button type="button" class="-ml-px relative inline-flex items-center px-3 py-1 border border-gray-300 bg-white dark:border-transparent dark:bg-gray-900 text-sm font-medium text-gray-700 hover:bg-gray-50 focus:z-10 focus:outline-none focus:ring-1 focus:ring-indigo-500 focus:border-indigo-500">
<svg
xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" class="w-4 h-4 text-gray-600 dark:text-gray-50">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 11V7a4 4 0 118 0m-4 8v2m-6 4h12a2 2 0 002-2v-6a2 2 0 00-2-2H6a2 2 0 00-2 2v6a2 2 0 002 2z"></path>
</svg>
</button>
<div class="relative inline-block text-left">
<div>
<button id="headlessui-menu-button-1" type="button" aria-haspopup="true" class="-ml-px relative inline-flex items-center px-3 py-2 rounded-r-md border border-gray-300 bg-white dark:bg-gray-900 dark:border-gray-800 dark:hover:bg-gray-600 text-sm font-medium text-gray-700 hover:bg-gray-50 focus:z-10 focus:outline-none focus:ring-1 focus:ring-indigo-500 focus:border-indigo-500" aria-expanded="true" aria-controls="headlessui-menu-items-2"> Send Option
<svg
xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor" class="-mr-1 ml-2 h-5 w-5">
<path fill-rule="evenodd" d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z" clip-rule="evenodd"></path>
</svg>
</button>
</div>
<div aria-labelledby="headlessui-menu-button-1" id="headlessui-menu-items-2" role="menu" tabindex="0" class="overflow-visible origin-top-right absolute bottom-10 mt-2 w-56 rounded-md shadow-lg bg-white dark:bg-gray-900 ring-1 ring-black ring-opacity-5 focus:outline-none">
<div class="py-1" role="none">
<a href="#" class="text-gray-700 block px-4 py-2 text-sm" disabled="false" id="headlessui-menu-item-41" role="menuitem" tabindex="-1">Account settings</a>
<a href="#" class="text-gray-700 block px-4 py-2 text-sm" disabled="false" id="headlessui-menu-item-42" role="menuitem" tabindex="-1">Support</a>
<a href="#" class="text-gray-700 block px-4 py-2 text-sm" disabled="false" id="headlessui-menu-item-43" role="menuitem" tabindex="-1">License</a>
<form method="POST" action="#" role="none">
<button type="submit" class="text-gray-700 block w-full text-left px-4 py-2 text-sm" id="headlessui-menu-item-44" role="menuitem" tabindex="-1"> Sign out </button>
</form>
</div>
</div>
</div>
</span>
<div class="pr-10 pl-10 pb-5 h-full mt-1 flex rounded-md shadow-sm">
<div class="relative flex items-stretch flex-grow focus-within:z-10">
<div class="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
<svg
xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" class="h-5 w-5 text-gray-400">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 4.354a4 4 0 110 5.292M15 21H3v-1a6 6 0 0112 0v1zm0 0h6v-1a6 6 0 00-9-5.197M13 7a4 4 0 11-8 0 4 4 0 018 0z"></path>
</svg>
</div>
<input type="text" name="email" id="email" class="focus:ring-indigo-500 focus:border-indigo-500 block w-full rounded-none rounded-l-md pl-10 sm:text-sm border-gray-300" placeholder="Type your message...">
</div>
<button id="switchTheme" class="-ml-px bg-indigo-700 relative inline-flex items-center space-x-2 px-4 py-1 border border-gray-300 text-sm font-medium rounded-r-md text-gray-700 bg-transparent hover:bg-gray-100 focus:outline-none focus:ring-1 focus:ring-indigo-500 focus:border-indigo-500">
<svg
xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" class="h-5 w-5 text-gray-50">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10.325 4.317c.426-1.756 2.924-1.756 3.35 0a1.724 1.724 0 002.573 1.066c1.543-.94 3.31.826 2.37 2.37a1.724 1.724 0 001.065 2.572c1.756.426 1.756 2.924 0 3.35a1.724 1.724 0 00-1.066 2.573c.94 1.543-.826 3.31-2.37 2.37a1.724 1.724 0 00-2.572 1.065c-.426 1.756-2.924 1.756-3.35 0a1.724 1.724 0 00-2.573-1.066c-1.543.94-3.31-.826-2.37-2.37a1.724 1.724 0 00-1.065-2.572c-1.756-.426-1.756-2.924 0-3.35a1.724 1.724 0 001.066-2.573c-.94-1.543.826-3.31 2.37-2.37.996.608 2.296.07 2.572-1.065z"></path>
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"></path>
</svg>
<span class="text-gray-50">Send</span>
</button>
</div>
</div>
</section>
【问题讨论】：
标签： css tailwind-css