html, body {
    height: 100%;
    margin: 0;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
}
.login__area {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    position: absolute;
    top: 50%;
    transform: translateY(-65%);
}

.login-alert {
	margin-top: 1em;
}

.input-group-addon {
    padding: 0.5em 0.75em;
}