.icon-square>img {
    background-color: black;
}

 
@media (min-width:320px) and (max-width:576px){

    .px-5{
        padding: none !important;
    }
}

footer{
    margin-top: 20px;
    display:flex;
    justify-content: center;
}
footer>div>p{
    margin: 0;
}