body {
    display: flex;
    flex-direction: column;
}

.container {
    flex-grow: 1;
}

h6 {
    text-align: center;
}

footer {
    background: #f1f1f1;
    padding: 10px;
    font-size: 5px;
    text-align: center;
}

@media (max-width: 815px) {
    h6 {
       font-size: 14px; 
    }
}

@media (max-width: 500px) {
    h6 {
       font-size: 10px; 
    }
}