form {
    width: 50%;
    margin: 0 auto;
}

label {
    display: block;
    margin-bottom: 5px;
}

input[type="text"], input[type="tel"], input[type="email"] {
    width: 100%;
    padding: 5px;   

}

input[type="submit"] {
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;   

}