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

body {
    background-color: #f5f5f5;
    font-family: Arial, sans-serif;
}

.container {
    max-width: 400px;
    margin: 50px auto;
    background-color: #fff;
    padding: 40px;
    box-shadow: 0 0 20px rgba(0, 0, 0, .1);
    border-radius: 10px;
    display: flex;
    flex-direction: column;
}

h2 {
    font-size: 32px;
    margin-bottom: 20px;
    text-align: center;
    color: #333;
}

form {
    display: flex;
    flex-direction: column;
    margin-top: 20px;
}

label {
    padding-left: 2px;
    font-size: 18px;
    margin-bottom: 10px;
    color: #333;
}

input[type="text"],
input[type="email"],
textarea {
    padding: 10px;
    margin-bottom: 20px;
    border: none;
    border-radius: 5px;
    background-color: #f5f5f5;
    color: #333;
    font-size: 16px;
}

input[type="submit"] {
    background-color: #333;
    color: #fff;
    padding: 10px;
    border: none;
    border-radius: 5px;
    font-size: 18px;
    cursor: pointer;
    transition: 0.3s ease;
}

input[type="submit"]:hover {
    background-color: #555;
}

::selection {
    color: black;
    background-color: #39FF14;
}

@media (max-width: 600px) {
    .container {
        max-width: 300px;
        margin: 80px auto;
        padding: 30px;
    }

    h2 {
        font-size: 25px;
    }

    label {
        padding-left: 2px;
        font-size: 15px;
        margin-bottom: 3px;
    }

    form {
        margin-top: 10px;
    }

    input[type="text"],
    input[type="email"],
    textarea {
        padding: 7px;
        margin-bottom: 7px;
        font-size: 13px;
    }

    input[type="submit"] {
        padding: 6px;
        border-radius: 5px;
        font-size: 15px;
    }
}