html - Make the span element inside div clickable -

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i have dropdown list using javascript. inside div have span element text div, because want show/hide text according screen size. added span element span area not clickable. other parts in div clickable , show menu, except area span. how make span clickable well?

here's code: 

<div onclick="dropdownfunction()" class="dropbtn"><span>my list &nbsp;</span> <i class="fa fa-arrow-circle-down" aria-hidden="true"></i></div>

and codepen: http://codepen.io/nfds89/pen/mylgkr

an alternate css-only solution pass through clicks on <span> , <i>

.dropbtn span, .dropbtn {   pointer-events: none; }

enter image description here


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