main {
    max-height: calc(100vh - 80px);
}
.form-group {
    display: flex;
    align-items: center; 
    justify-content: center;
    flex-direction: column;
    margin-bottom: 16px;
}

.form-label {
    width: 100%;
}

form button[type='submit'] {
    width: 100%;
}