html, body {
    height: 100%
}
body {
    background-color: #f3f3f4;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", Icons16, sans-serif;
    color: #313139;
}

.btn-primary {
    background-color: #ff5722;
    border-color: #ff5722;
}
.btn-primary:hover {
    background-color: #cd4c29;
    border-color: #cd4c29;
}
.btn-primary:not(:disabled):not(.disabled).active, .btn-primary:not(:disabled):not(.disabled):active {
    background-color: #cd4c29;
    border-color: #cd4c29;
}

footer {
    font-size: 80%;
}