body {
    background-color:#fff;
}
    .center-screen {
    display: flex;
    justify-content: center; 
    align-items: center; 
    width:720px;
    height: 100vh;
}

@media (max-width: 768px) {
    .center-screen {
        width: 100%; 
    }
}
.footer {
    padding: 10px 0;
    background-color: #f6f5f5;
    color: #808080;
    min-width: 180px;
}
footer.copyright {
    width: 100%;
    line-height: 10px;
    text-align: center;
    bottom: 0;
}
a {
    /*color: #193768 !important;*/
    color: #555 !important;
}
div {
    font-family: "Source Sans Pro",Helvetica,Arial,sans-serif;
}