I am trying to make sticky div inside div col-md-3 , it working fine if I don't use col-md-3 class, please tell what I am doing wrong,
.sticky {
positon: sticky;
top: 0;
}<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet" /><div class="row"><div class=" col-3"><div class="sticky" style="border:1px solid; color:red">sticky</div></div><div class="col-9" style="height:1000px; border:1px solid; background:red"></div></div>