.box{
    width: 37rem;
    padding: 1rem 1rem;
    margin:auto;
    color: #5d627b;
    background: white;
    border-top: solid 2px #eeeeee;
    box-shadow: 0 3px 5px rgba(0, 0, 0, 0.22);
}
p {
    margin: 0; 
    padding: 0;
}

@media screen and (max-width: 720px) {
    .box{
        width: 100%;
    }

    .mobile_br::before {
        content: "\A";
        white-space: pre;
    }
}