* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    background: linear-gradient(135deg, #afb3b4, #191a1b);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    width: 400px;
}

h4 {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
    font-size: 24px;
    font-weight: 600;
}

input[type="text"], 
input[type="email"], 
textarea {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

input[type="text"]:focus, 
input[type="email"]:focus, 
textarea:focus {
    border-color: #2193b0;
    outline: none;
}

input[type="submit"] {
    width: 100%;
    padding: 12px;
    background-color: #1f1b1b;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 18px;
    transition: background-color 0.3s ease;
}

input[type="submit"]:hover {
    background-color: #9aabb5;
}

textarea {
    resize: none;
    font-family: 'Arial', sans-serif;
}

@media (max-width: 500px) {
    .container {
        width: 100%;
        padding: 20px;
    }
}