body {
 font-family: Arial, sans-serif;
 background-color: #f2f2f2;
}

.contenedor {
 width: 50%;
 margin: 40px auto;
 padding: 20px;
 background-color: #fff;
 border: 1px solid #ddd;
 border-radius: 10px;
 box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

label {
 display: block;
 margin-bottom: 10px;
}

input[type="text"], input[type="tel"], input[type="email"] {
 width: 100%;
 height: 40px;
 margin-bottom: 20px;
 padding: 10px;
 border: 1px solid #ccc;
 border-radius: 5px;
}

input[type="submit"] {
 width: 100%;
 height: 40px;
 background-color: #4CAF50;
 color: #fff;
 padding: 10px;
 border: none;
 border-radius: 5px;
 cursor: pointer;
}

input[type="submit"]:hover {
 background-color: #3e8e41;
}