typo3 bootstrap accordion - collapse the initial element -

this related typo3 bootstrap theme please.

i'd have elements of accordion closed @ page startup. top element is open here

in understand it's related in in class of statement

<div id="panel-425-0" class="panel-collapse collapse in">

but changing in source have side effects other locations i'like avoid.

so i'm looking solution closure css or javascript.

any guidance welcome.

here try this

so element id , re-set class attribute without 'in' class.

<script>     document.getelementbyid('panel-425-0').setattribute('class','panel-collapse collapse'); </script>

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