body {
    background-image: url(fondo.jpg);
    -webkit-background-size: cover;
    background-size: cover;
}
form,
input,
button {
    margin: 10px;
}
#login {
    background-color: rgba(0, 0, 0, 0.5);
    margin-top: 100px;
    border-radius: 10px;
}
#nebaris {
    background-color: #000;
    color: white;
    padding: 15px;
    text-align: center;
    font-family: helvetica;
    margin-top: 300px;
}
#nebaris a {
    color: rgb(178, 255, 178);
    border: 0;
}
#nebaris a:hover {
    color: white;
    background-color: black;
}