.login-page {
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
    height: 100vh;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
    position:absolute;
    width:100%;
    height:100%;
}
.form-group{
    margin-bottom:10px;
}
.login-box {
    width: 460px;
    background-color: white;
    padding: 30px;
    font-family: Calibri, Sans-serif;
}

@media (max-width: 576px) {
    .login-box {
        margin-top: .5rem;
        width: 90%;
    }
}