body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #ffffff;
    background-image: url('images/fondo.jpg');
    background-size: 80%;
    background-position: repeat;
    text-align: center;
}

.container {
    width: 50%;
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.formulario {
    width: 90%;
    padding: 20px;
    background-color: transparent;
    border: 1px solid #ffffff;
    border-radius: 0;
}

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

input[type="text"],
input[type="email"],
input[type="file"],
input[type="submit"],
select {
    width: calc(100% - 22px);
    padding: 10px;
    margin-bottom: 20px;
    box-sizing: border-box;
    border: 1px solid #ffffff;
    border-radius: 0;
    background-color: transparent;
    color: #ffffff;
}

input[type="submit"] {
    background-color: transparent;
    color: #ffffff;
    border: 1px solid #ffffff;
    cursor: pointer;
}

input[type="submit"]:hover {
    font-style: italic;
}

@media screen and (max-width: 767px) {
    .container {
        width: 98%;
    }

    .formulario {
        width: 98%;
    }
}