.top-bar {
    position: sticky;
    top: 0;
    z-index: 3;
}
.sidebar{
z-index: 1;
} 
.stepper
{
overflow: auto;
}
 .sticky-position{
    position: sticky;
    top:63px;
    background-color: #000000;
    z-index: 2;
 }
 div.step{
    z-index: 1;
 }
 
 
 
 /* responsive css  */

@media (max-width: 768px) {
    .sidebar {
        top: 68px;
        z-index: 9;
    }
}

@media(max-width:576px){
    .footer{
        margin-top: 0px;
    }
}