body {
    font-family: Arial;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    width: 350px;
}

.form-box {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
}

input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
}

button {
    width: 100%;
    padding: 10px;
    background: #667eea;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background: #5a67d8;
}

@media(max-width: 400px) {
    .container {
        width: 90%;
    }
}