Why this CSS3 transition on height does not work
问题 I have been working in an accordion, but for some odd reason the following code: <style> .collapse { position: relative; height: 0; overflow: hidden; -webkit-transition: height .35s ease; -moz-transition: height .35s ease; -o-transition: height .35s ease; transition: height .35s ease; } .collapse.in { height: auto; } </style> <div class="accordion"> <div class="something"> <a class="" >Accordion Pane 1</a> </div> <div class="accordion-body collapse"> <div class="accordion-inner"> content <