.container {
    height: calc(100vh - 40px);
}
.form-group {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}
.form-group input[type="password"] {
    width: 150px;
    padding: 5px;
    font-size: 16px;
}
.form-group button {
    padding: 5px 15px;
    font-size: 16px;
    margin-left: 10px;
}