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

body{
    display: flex;
    justify-content: center;
    align-items: center;
}

.container{
    max-width: 500px;
    box-shadow: 0px 0px 7px 10px black;
}

.form-group{
    margin: 30px;
}