嗨我在html文件中有以下内容：我希望看到的是部分覆盖图像“avatar”的块，当我将鼠标悬停在其上时，它会消失，并且只显示图像。我还在顶部添加了以下css文件，还有什么我应该做的吗？动画不起作用！非常感谢请帮助我！
<link rel="stylesheet" href="assets/css/theme.css">
<link rel="stylesheet" href="assets/css/bootstrap.css">
<link rel="stylesheet" href="assets/css/custom.css">
<link href="assets/css/widgetkit-9e41562f.css" rel="stylesheet" type="text/css">
<script src="/assets/js1/downloads/uikit.js"></script>
<script src="/assets/js1/downloads/autocomplete.js"></script>
<script src="/assets/js1/downloads/search.js"></script>
<script src="/assets/js1/downloads/verticalDropdown.js"></script>
<script src="/assets/js1/downloads/social.js"></script>
<script src="/assets/js1/downloads/theme.js"></script>
<script src="/assets/js1/downloads/snap.svg-min.js"></script>
<script src="/assets/js1/downloads/jquery-noconflict.js" type="text/javascript"></script>
<script src="/assets/js1/downloads/jquery-migrate.min.js" type="text/javascript"></script>
<script src="/assets/js1/downloads/widgetkit-e0b74091.js" type="text/javascript"></script>
<script type="text/javascript" async="" src="/assets/js1/downloads/ga.js"></script><script src="/assets/js1/downloads/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
window.setInterval（function（）{var r; try {r = window.XMLHttpRequest？new XMLHttpRequest（）：new ActiveXObject（“Microsoft.XMLHTTP”）} catch（e）{} if（r）{r。打开（ “GET”， “/ index.php的选项= com_ajax＆安培;格式= JSON”，TRUE）; r.send（空）}}，840000）;
<script type="text/javascript">var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-23972361-1']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
</script>
<div class="tm-page">
<div class="uk-container uk-container-center">
<div class="tm-block ">
<section id = "test" class="tm-top-b uk-grid" data-uk-grid-match="{target:'.uk-panel'}" data-uk-grid-margin="">
<div class="uk-hidden-small uk-width-medium-1-1"><div class="uk-panel uk-hidden-small">
<div class="uk-text-center">
<div class="uk-grid" data-uk-grid-margin="" data-uk-grid-match="{target:'.tm-overlay-caption'}">
<div class="uk-width-1-1 uk-width-small-1-2 uk-width-medium-1-3 uk-width-large-1-4 uk-scrollspy-init-inview uk-scrollspy-inview uk-animation-fade" data-uk-scrollspy="{cls:'uk-animation-fade'}">
<div class="tm-overlay"><img src="./images/avatar.jpg" alt="avatar.jpg"><svg class="uk-hidden-small" viewBox="0 0 180 320" preserveAspectRatio="none" xmlns="http://www.w3.org/2000/svg"><path d="m 0,0 0,171.14385 c 24.580441,15.47138 55.897012,24.75772 90,24.75772 34.10299,0 65.41956,-9.28634 90,-24.75772 L 180,0 0,0 z"></path><desc>Created with Snap</desc><defs></defs></svg><br>
<div class="tm-overlay-caption" style="min-height: 0px;">
<h2 class="tm-overlay-title">A results</h2>
</div>
</div>
</div>
<div class="uk-width-1-1 uk-width-small-1-2 uk-width-medium-1-3 uk-width-large-1-4 uk-scrollspy-init-inview uk-scrollspy-inview uk-animation-fade" data-uk-scrollspy="{cls:'uk-animation-fade', delay:100}">
<div class="tm-overlay"><img src="./images/avatar.jpg" alt="avatar.jpg"><svg class="uk-hidden-small" viewBox="0 0 180 320" preserveAspectRatio="none" xmlns="http://www.w3.org/2000/svg"><path d="m 0,0 0,171.14385 c 24.580441,15.47138 55.897012,24.75772 90,24.75772 34.10299,0 65.41956,-9.28634 90,-24.75772 L 180,0 0,0 z"></path><desc>Created with Snap</desc><defs></defs></svg><br>
<div class="tm-overlay-caption" style="min-height: 0px;">
<h2 class="tm-overlay-title">B results</h2>
</div>
</div>
</div>
<div class="uk-width-1-1 uk-width-small-1-2 uk-hidden-medium uk-width-large-1-4 uk-scrollspy-init-inview uk-scrollspy-inview uk-animation-fade" data-uk-scrollspy="{cls:'uk-animation-fade', delay:300}">
<div class="tm-overlay"><img src="./images/avatar.jpg" alt="avatar.jpg"><svg class="uk-hidden-small" viewBox="0 0 180 320" preserveAspectRatio="none" xmlns="http://www.w3.org/2000/svg"><path d="m 0,0 0,171.14385 c 24.580441,15.47138 55.897012,24.75772 90,24.75772 34.10299,0 65.41956,-9.28634 90,-24.75772 L 180,0 0,0 z"></path><desc>Created with Snap</desc><defs></defs></svg><br>
<div class="tm-overlay"><img src="./images/avatar.jpg" alt="avatar.jpg"><svg class="uk-hidden-small" viewBox="0 0 180 320" preserveAspectRatio="none" xmlns="http://www.w3.org/2000/svg"><path d="m 0,0 0,171.14385 c 24.580441,15.47138 55.897012,24.75772 90,24.75772 34.10299,0 65.41956,-9.28634 90,-24.75772 L 180,0 0,0 z"></path><desc>Created with Snap</desc><defs></defs></svg><br>
<div class="tm-overlay-caption" style="min-height: 0px;">
<h2 class="tm-overlay-title">C results</h2>
</div>
</div>
</div>
</div>
</div>
</section>
</div>
</div>
</div>
</div>
</div>
</div>