以下是 CSS3响应式垂直手风琴展开收缩特效代码 的示例演示效果:
部分效果截图:
HTML代码(index.html):
<!DOCTYPE html>
<html lang="zh" class="no-js">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>CSS3响应式垂直手风琴展开收缩特效</title>
<script src="js/modernizr.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="css/reset.css" />
<link rel="stylesheet" type="text/css" href="css/demo.css">
<link rel="stylesheet" type="text/css" href="css/style.css">
</head>
<body>
<div class="container">
<div class="accordion">
<dl>
<dt>
<a href="#accordion1" aria-expanded="false" aria-controls="accordion1" class="accordion-title accordionTitle js-accordionTrigger">First Accordion heading</a>
</dt>
<dd class="accordion-content accordionItem is-collapsed" id="accordion1" aria-hidden="true">
<p>Lorem ipsum dolor sit amet, consectetur Test adipiscing elit. Morbi eu interdum diam. Donec interdum porttitor risus non bibendum. Maecenas sollicitudin eros in quam imperdiet placerat. Cras justo purus, rhoncus nec lobortis ut, iaculis vel ipsum. Donec dignissim arcu nec elit faucibus condimentum. Donec facilisis consectetur enim sit amet varius. Pellentesque justo dui, sodales quis luctus a, iaculis eget mauris. </p>
<p>Aliquam dapibus, ante quis fringilla feugiat, mauris risus condimentum massa, at elementum libero quam ac ligula. Pellentesque at rhoncus dolor. Duis porttitor nibh ut lobortis aliquam. Nullam eu dolor venenatis mauris placerat tristique eget id dolor. Quisque blandit adipiscing erat vitae dapibus. Nulla aliquam magna nec elementum tincidunt.</p>
</dd>
<dt>
<a href="#accordion2" aria-expanded="false" aria-controls="accordion2" class="accordion-title accordionTitle js-accordionTrigger">
Second Accordion heading</a>
</dt>
<dd class="accordion-content accordionItem is-collapsed" id="accordion2" aria-hidden="true">
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi eu interdum diam. Donec interdum porttitor risus non bibendum. Maecenas sollicitudin eros in quam imperdiet placerat. Cras justo purus, rhoncus nec lobortis ut, iaculis vel ipsum. Donec dignissim arcu nec elit faucibus condimentum. Donec facilisis consectetur enim sit amet varius. Pellentesque justo dui, sodales quis luctus a, iaculis eget mauris. </p>
<p>Aliquam dapibus, ante quis fringilla feugiat, mauris risus condimentum massa, at elementum libero quam ac ligula. Pellentesque at rhoncus dolor. Duis porttitor nibh ut lobortis aliquam. Nullam eu dolor venenatis mauris placerat tristique eget id dolor. Quisque blandit adipiscing erat vitae dapibus. Nulla aliquam magna nec elementum tincidunt.</p>
</dd>
<dt>
<a href="#accordion3" aria-expanded="false" aria-controls="accordion3" class="accordion-title accordionTitle js-accordionTrigger">
Third Accordion heading
</a>
</dt>
<dd class="accordion-content accordionItem is-collapsed" id="accordion3" aria-hidden="true">
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi eu interdum diam. Donec interdum porttitor risus non bibendum. Maecenas sollicitudin eros in quam imperdiet placerat. Cras justo purus, rhoncus nec lobortis ut, iaculis vel ipsum. Donec dignissim arcu nec elit faucibus condimentum. Donec facilisis consectetur enim sit amet varius. Pellentesque justo dui, sodales quis luctus a, iaculis eget mauris. </p>
<p>Aliquam dapibus, ante quis fringilla feugiat, mauris risus condimentum massa, at elementum libero quam ac ligula. Pellentesque at rhoncus dolor. Duis porttitor nibh ut lobortis aliquam. Nullam eu dolor venenatis mauris placerat tristique eget id dolor. Quisque blandit adipiscing erat vitae dapibus. Nulla aliquam magna nec elementum tincidunt.</p>
</dd>
</dl>
</div>
</div>
<script type="text/javascript">
//uses classList, setAttribute, and querySelectorAll
//if you want this to work in IE8/9 youll need to polyfill these
(function(){
var d = document,
accordionToggles = d.querySelectorAll('.js-accordionTrigger'),
setAria,
setAccordionAria,
switchAccordion,
touchSupported = ('ontouchstart' in window),
pointerSupported = ('pointerdown' in window);
skipClickDelay = function(e){
e.preventDefault();
e.target.click();
}
setAriaAttr = function(el, ariaType, newProperty){
el.setAttribute(ariaType, newProperty);
};
setAccordionAria = function(el1, el2, expanded){
switch(expanded) {
case "true":
setAriaAttr(el1, 'aria-expanded', 'true');
setAriaAttr(el2, 'aria-hidden', 'false');
break;
case "false":
setAriaAttr(el1, 'aria-expanded', 'false');
setAriaAttr(el2, 'aria-hidden', 'true');
break;
default:
break;
}
};
//function
switchAccordion = function(e) {
console.log("triggered");
e.preventDefault();
var thisAnswer = e.target.parentNode.nextElementSibling;
var thisQuestion = e.target;
if(thisAnswer.classList.contains('is-collapsed')) {
setAccordionAria(thisQuestion, thisAnswer, 'true');
} else {
setAccordionAria(thisQuestion, thisAnswer, 'false');
}
thisQuestion.classList.toggle('is-collapsed');
thisQuestion.classList.toggle('is-expanded');
thisAnswer.classList.toggle('is-collapsed');
thisAnswer.classList.toggle('is-expanded');
thisAnswer.classList.toggle('animateIn');
};
for (var i=0,len=accordionToggles.length; i<len; i++) {
if(touchSupported) {
accordionToggles[i].addEventListener('touchstart', skipClickDelay, false);
}
if(pointerSupported){
accordionToggles[i].addEventListener('pointerdown', skipClickDelay, false);
}
accordionToggles[i].addEventListener('click', switchAccordion, false);
}
})();
</script>
</body>
</html>
JS代码(modernizr.js):
window.Modernizr=function(e,t,n){
function r(e){
b.cssText=e}
function o(e,t){
return r(S.join(e+";
")+(t||""))}
function a(e,t){
return typeof e===t}
function i(e,t){
return!!~(""+e).indexOf(t)}
function c(e,t){
for(var r in e){
var o=e[r];
if(!i(o,"-")&&b[o]!==n)return"pfx"==t?o:!0}
return!1}
function s(e,t,r){
for(var o in e){
var i=t[e[o]];
if(i!==n)return r===!1?e[o]:a(i,"function")?i.bind(r||t):i}
return!1}
function l(e,t,n){
var r=e.charAt(0).toUpperCase()+e.slice(1),o=(e+" "+k.join(r+" ")+r).split(" ");
return a(t,"string")||a(t,"undefined")?c(o,t):(o=(e+" "+T.join(r+" ")+r).split(" "),s(o,t,n))}
function u(){
m.input=function(n){
for(var r=0,o=n.length;
o>r;
r++)M[n[r]]=n[r]in E;
return M.list&&(M.list=!!t.createElement("datalist")&&!!e.HTMLDataListElement),M}
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for(var r,o,a,i=0,c=e.length;
c>i;
i++)E.setAttribute("type",o=e[i]),r="text"!==E.type,r&&(E.value=w,E.style.cssText="position:absolute;
visibility:hidden;
",/^range$/.test(o)&&E.style.WebkitAppearance!==n?(g.appendChild(E),a=t.defaultView,r=a.getComputedStyle&&"textfield"!==a.getComputedStyle(E,null).WebkitAppearance&&0!==E.offsetHeight,g.removeChild(E)):/^(search|tel)$/.test(o)||(r=/^(url|email)$/.test(o)?E.checkValidity&&E.checkValidity()===!1:E.value!=w)),P[e[i]]=!!r;
return P}
("search tel url email datetime date month week time datetime-local number range color".split(" "))}
var f,d,p="2.8.3",m={
}
,h=!0,g=t.documentElement,v="modernizr",y=t.createElement(v),b=y.style,E=t.createElement("input"),w=":)",x={
}
.toString,S=" -webkit- -moz- -o- -ms- ".split(" "),C="Webkit Moz O ms",k=C.split(" "),T=C.toLowerCase().split(" "),j={
svg:"http://www.w3.org/2000/svg"}
,N={
}
,P={
}
,M={
}
,A=[],L=A.slice,$=function(e,n,r,o){
var a,i,c,s,l=t.createElement("div"),u=t.body,f=u||t.createElement("body");
if(parseInt(r,10))for(;
r--;
)c=t.createElement("div"),c.id=o?o[r]:v+(r+1),l.appendChild(c);
return a=["­
",'<style id="s',v,'">',e,"</style>"].join(""),l.id=v,(u?l:f).innerHTML+=a,f.appendChild(l),u||(f.style.background="",f.style.overflow="hidden",s=g.style.overflow,g.style.overflow="hidden",g.appendChild(f)),i=n(l,e),u?l.parentNode.removeChild(l):(f.parentNode.removeChild(f),g.style.overflow=s),!!i}
,z=function(){
function e(e,o){
o=o||t.createElement(r[e]||"div"),e="on"+e;
var i=e in o;
return i||(o.setAttribute||(o=t.createElement("div")),o.setAttribute&&o.removeAttribute&&(o.setAttribute(e,""),i=a(o[e],"function"),a(o[e],"undefined")||(o[e]=n),o.removeAttribute(e))),o=null,i}
var r={
select:"input",change:"input",submit:"form",reset:"form",error:"img",load:"img",abort:"img"}
;
return e}
(),D={
}
.hasOwnProperty;
d=a(D,"undefined")||a(D.call,"undefined")?function(e,t){
return t in e&&a(e.constructor.prototype[t],"undefined")}
:function(e,t){
return D.call(e,t)}
,Function.prototype.bind||(Function.prototype.bind=function(e){
var t=this;
if("function"!=typeof t)throw new TypeError;
var n=L.call(arguments,1),r=function(){
if(this instanceof r){
var o=function(){
}
;
o.prototype=t.prototype;
var a=new o,i=t.apply(a,n.concat(L.call(arguments)));
return Object(i)===i?i:a}
return t.apply(e,n.concat(L.call(arguments)))}
;
return r}
),N.flexbox=function(){
return l("flexWrap")}
,N.canvas=function(){
var e=t.createElement("canvas");
return!!e.getContext&&!!e.getContext("2d")}
,N.canvastext=function(){
return!!m.canvas&&!!a(t.createElement("canvas").getContext("2d").fillText,"function")}
,N.webgl=function(){
return!!e.WebGLRenderingContext}
,N.touch=function(){
var n;
return"ontouchstart"in e||e.DocumentTouch&&t instanceof DocumentTouch?n=!0:$(["@media (",S.join("touch-enabled),("),v,")","{
#modernizr{
top:9px;
position:absolute}
}
"].join(""),function(e){
n=9===e.offsetTop}
),n}
,N.geolocation=function(){
return"geolocation"in navigator}
,N.postmessage=function(){
return!!e.postMessage}
,N.websqldatabase=function(){
return!!e.openDatabase}
,N.indexedDB=function(){
return!!l("indexedDB",e)}
,N.hashchange=function(){
return z("hashchange",e)&&(t.documentMode===n||t.documentMode>7)}
,N.history=function(){
return!!e.history&&!!history.pushState}
,N.draganddrop=function(){
var e=t.createElement("div");
return"draggable"in e||"ondragstart"in e&&"ondrop"in e}
,N.websockets=function(){
return"WebSocket"in e||"MozWebSocket"in e}
,N.rgba=function(){
return r("background-color:rgba(150,255,150,.5)"),i(b.backgroundColor,"rgba")}
,N.hsla=function(){
return r("background-color:hsla(120,40%,100%,.5)"),i(b.backgroundColor,"rgba")||i(b.backgroundColor,"hsla")}
,N.multiplebgs=function(){
return r("background:url(https://),url(https://),red url(https://)"),/(url\s*\(.*?){
3}
/.test(b.background)}
,N.backgroundsize=function(){
return l("backgroundSize")}
,N.borderimage=function(){
return l("borderImage")}
,N.borderradius=function(){
return l("borderRadius")}
,N.boxshadow=function(){
return l("boxShadow")}
,N.textshadow=function(){
return""===t.createElement("div").style.textShadow}
,N.opacity=function(){
return o("opacity:.55"),/^0.55$/.test(b.opacity)}
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return l("animationName")}
,N.csscolumns=function(){
return l("columnCount")}
,N.cssgradients=function(){
var e="background-image:",t="gradient(linear,left top,right bottom,from(#9f9),to(white));
",n="linear-gradient(left top,#9f9,white);
";
return r((e+"-webkit- ".split(" ").join(t+e)+S.join(n+e)).slice(0,-e.length)),i(b.backgroundImage,"gradient")}
,N.cssreflections=function(){
return l("boxReflect")}
,N.csstransforms=function(){
return!!l("transform")}
,N.csstransforms3d=function(){
var e=!!l("perspective");
return e&&"webkitPerspective"in g.style&&$("@media (transform-3d),(-webkit-transform-3d){
#modernizr{
left:9px;
position:absolute;
height:3px;
}
}
",function(t){
e=9===t.offsetLeft&&3===t.offsetHeight}
),e}
,N.csstransitions=function(){
return l("transition")}
,N.fontface=function(){
var e;
return $('@font-face{
font-family:"font";
src:url("https://")}
',function(n,r){
var o=t.getElementById("smodernizr"),a=o.sheet||o.styleSheet,i=a?a.cssRules&&a.cssRules[0]?a.cssRules[0].cssText:a.cssText||"":"";
e=/src/i.test(i)&&0===i.indexOf(r.split(" ")[0])}
),e}
,N.generatedcontent=function(){
var e;
return $(["#",v,"{
font:0/0 a}
#",v,':after{
content:"',w,'";
visibility:hidden;
font:3px/1 a}
'].join(""),function(t){
e=t.offsetHeight>=3}
),e}
,N.video=function(){
var e=t.createElement("video"),n=!1;
try{
(n=!!e.canPlayType)&&(n=new Boolean(n),n.ogg=e.canPlayType('video/ogg;
codecs="theora"').replace(/^no$/,""),n.h264=e.canPlayType('video/mp4;
codecs="avc1.42E01E"').replace(/^no$/,""),n.webm=e.canPlayType('video/webm;
codecs="vp8,vorbis"').replace(/^no$/,""))}
catch(r){
}
return n}
,N.audio=function(){
var e=t.createElement("audio"),n=!1;
try{
(n=!!e.canPlayType)&&(n=new Boolean(n),n.ogg=e.canPlayType('audio/ogg;
codecs="vorbis"').replace(/^no$/,""),n.mp3=e.canPlayType("audio/mpeg;
").replace(/^no$/,""),n.wav=e.canPlayType('audio/wav;
codecs="1"').replace(/^no$/,""),n.m4a=(e.canPlayType("audio/x-m4a;
")||e.canPlayType("audio/aac;
")).replace(/^no$/,""))}
catch(r){
}
return n}
,N.localstorage=function(){
try{
return localStorage.setItem(v,v),localStorage.removeItem(v),!0}
catch(e){
return!1}
}
,N.sessionstorage=function(){
try{
return sessionStorage.setItem(v,v),sessionStorage.removeItem(v),!0}
catch(e){
return!1}
}
,N.webworkers=function(){
return!!e.Worker}
,N.applicationcache=function(){
return!!e.applicationCache}
,N.svg=function(){
return!!t.createElementNS&&!!t.createElementNS(j.svg,"svg").createSVGRect}
,N.inlinesvg=function(){
var e=t.createElement("div");
return e.innerHTML="<svg/>",(e.firstChild&&e.firstChild.namespaceURI)==j.svg}
,N.smil=function(){
return!!t.createElementNS&&/SVGAnimate/.test(x.call(t.createElementNS(j.svg,"animate")))}
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return!!t.createElementNS&&/SVGClipPath/.test(x.call(t.createElementNS(j.svg,"clipPath")))}
;
for(var F in N)d(N,F)&&(f=F.toLowerCase(),m[f]=N[F](),A.push((m[f]?"":"no-")+f));
return m.input||u(),m.addTest=function(e,t){
if("object"==typeof e)for(var r in e)d(e,r)&&m.addTest(r,e[r]);
else{
if(e=e.toLowerCase(),m[e]!==n)return m;
t="function"==typeof t?t():t,"undefined"!=typeof h&&h&&(g.className+=" "+(t?"":"no-")+e),m[e]=t}
return m}
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function n(e,t){
var n=e.createElement("p"),r=e.getElementsByTagName("head")[0]||e.documentElement;
return n.innerHTML="x<style>"+t+"</style>",r.insertBefore(n.lastChild,r.firstChild)}
function r(){
var e=y.elements;
return"string"==typeof e?e.split(" "):e}
function o(e){
var t=v[e[h]];
return t||(t={
}
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function a(e,n,r){
if(n||(n=t),u)return n.createElement(e);
r||(r=o(n));
var a;
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if(e||(e=t),u)return e.createDocumentFragment();
n=n||o(e);
for(var a=n.frag.cloneNode(),i=0,c=r(),s=c.length;
s>i;
i++)a.createElement(c[i]);
return a}
function c(e,t){
t.cache||(t.cache={
}
,t.createElem=e.createElement,t.createFrag=e.createDocumentFragment,t.frag=t.createFrag()),e.createElement=function(n){
return y.shivMethods?a(n,e,t):t.createElem(n)}
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var n=f.cloneNode(),c=n.createElement;
h.shivMethods&&("+r().join().replace(/[\w\-]+/g,function(e){
return t.createElem(e),t.frag.createElement(e),'c("'+e+'")'}
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return n}
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function s(e){
e||(e=t);
var r=o(e);
return y.shivCSS&&!l&&!r.hasCSS&&(r.hasCSS=!!n(e,"article,aside,dialog,figcaption,figure,footer,header,hgroup,main,nav,section{
display:block}
mark{
background:#FF0;
color:#000}
template{
display:none}
")),u||c(e,r),e}
var l,u,f="3.7.0",d=e.html5||{
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try{
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catch(n){
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var f,d,p=t.documentElement,m=e.setTimeout,h=t.getElementsByTagName("script")[0],g={
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timeout:function(e,t){
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function t(e){
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CSS代码(demo.css):
body,html{font-size:100%;padding:0;margin:0;}
/* Reset */
*,*:after,*:before{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;}
/* Clearfix hack by Nicolas Gallagher:http://nicolasgallagher.com/micro-clearfix-hack/ */
.clearfix:before,.clearfix:after{content:" ";display:table;}
.clearfix:after{clear:both;}
body{/*background:#494A5F;color:#D5D6E2;font-weight:500;font-size:1.05em;*/
font-family:"Microsoft YaHei","宋体","Segoe UI","Lucida Grande",Helvetica,Arial,sans-serif,FreeSans,Arimo;}
.container{margin:0 auto;}
CSS代码(reset.css):
html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{margin:0;padding:0;border:0;font-size:100%;font:inherit;vertical-align:baseline}
article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section{display:block}
body{line-height:1}
ol,ul{list-style:none}
blockquote,q{quotes:none}
blockquote:before,blockquote:after,q:before,q:after{content:'';content:none}
table{border-collapse:collapse;border-spacing:0}
CSS代码(style.css):
*{box-sizing:border-box;}
body{font-family:"Microsoft YaHei",sans-serif;}
.heading-primary{font-size:2em;padding:2em;text-align:center;}
.accordion dl,.accordion-list{border:1px solid #ddd;}
.accordion dl:after,.accordion-list:after{content:"";display:block;height:1em;width:100%;background-color:#2ba659;}
.accordion dd,.accordion__panel{background-color:#eee;font-size:1em;line-height:1.5em;}
.accordion p{padding:1em 2em 1em 2em;}
.accordion{position:relative;background-color:#eee;}
.container{max-width:960px;margin:0 auto;padding:2em 0 2em 0;}
.accordionTitle,.accordion__Heading{background-color:#38cc70;text-align:center;font-weight:700;padding:2em;display:block;text-decoration:none;color:#fff;-webkit-transition:background-color 0.5s ease-in-out;transition:background-color 0.5s ease-in-out;border-bottom:1px solid #30bb64;}
.accordionTitle:before,.accordion__Heading:before{content:"+";font-size:1.5em;line-height:0.5em;float:left;-webkit-transition:-webkit-transform 0.3s ease-in-out;transition:-webkit-transform 0.3s ease-in-out;transition:transform 0.3s ease-in-out;transition:transform 0.3s ease-in-out,-webkit-transform 0.3s ease-in-out;}
.accordionTitle:hover,.accordion__Heading:hover{background-color:#2ba659;}
.accordionTitleActive,.accordionTitle.is-expanded{background-color:#2ba659;}
.accordionTitleActive:before,.accordionTitle.is-expanded:before{-webkit-transform:rotate(-225deg);transform:rotate(-225deg);}
.accordionItem{height:auto;overflow:hidden;max-height:50em;-webkit-transition:max-height 1s;transition:max-height 1s;}
@media screen and (min-width:48em){.accordionItem{max-height:15em;-webkit-transition:max-height 0.5s;transition:max-height 0.5s;}
}
.accordionItem.is-collapsed{max-height:0;}
.no-js .accordionItem.is-collapsed{max-height:auto;}
.animateIn{-webkit-animation:accordionIn 0.45s normal ease-in-out both 1;animation:accordionIn 0.45s normal ease-in-out both 1;}
.animateOut{-webkit-animation:accordionOut 0.45s alternate ease-in-out both 1;animation:accordionOut 0.45s alternate ease-in-out both 1;}
@-webkit-keyframes accordionIn{0%{opacity:0;-webkit-transform:scale(0.9) rotateX(-60deg);transform:scale(0.9) rotateX(-60deg);-webkit-transform-origin:50% 0;transform-origin:50% 0;}
100%{opacity:1;-webkit-transform:scale(1);transform:scale(1);}
}
@keyframes accordionIn{0%{opacity:0;-webkit-transform:scale(0.9) rotateX(-60deg);transform:scale(0.9) rotateX(-60deg);-webkit-transform-origin:50% 0;transform-origin:50% 0;}
100%{opacity:1;-webkit-transform:scale(1);transform:scale(1);}
}
@-webkit-keyframes accordionOut{0%{opacity:1;-webkit-transform:scale(1);transform:scale(1);}
100%{opacity:0;-webkit-transform:scale(0.9) rotateX(-60deg);transform:scale(0.9) rotateX(-60deg);}
}
@keyframes accordionOut{0%{opacity:1;-webkit-transform:scale(1);transform:scale(1);}
100%{opacity:0;-webkit-transform:scale(0.9) rotateX(-60deg);transform:scale(0.9) rotateX(-60deg);}
}
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