* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.signup-container,
.login-container {
    width: 300px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
}

.signup-container .form-group,
.login-container .form-group {
    margin-bottom: 20px;
}

.signup-container h2,
.login-container h2 {
    margin-bottom: 20px;
    text-align: center;
}