@media (max-width:600px){

.mainhedlink h3 {
    cursor: pointer;
    padding: 4px;
    margin: 0;
    font-size: 18px;
   /* background-color: #151f28; */
    color: #fff;
}
li, ul {
    list-style-type: none;
}

ul {
    display:none;
}

}

@media screen and (max-width:600px){.col-sm-3{width:100%!important;}}