* {
    margin: 0;
    padding: 0;
}

#logo {
    margin-top: 2%;
    margin-bottom: 2%;
}

#login {
    width: 400px;
    margin: 0 auto;
    margin-top: 2%;
    margin-bottom: 2%;
    transition: opacity 1s;
    -webkit-transition: opacity 1s;
}

#login h1 {
    background: #ffffff;
    padding: 20px 0;
    font-size: 100%;
    font-weight: 300;
    text-align: center;
    color: rgb(0, 0, 0);
}

form {
    background: #f0f0f0;
    padding: 6% 4%;
}

input[type="username"],
input[type="password"] {
    width: 100%;
    margin-bottom: 4%;
    padding: 4%;
}

input[type="submit"] {
    width: 100%;
    background: #444444;
    margin-top: 4%;
    border: 0;
    padding: 4%;
    transition: background .3s;
    -webkit-transition: background .3s;
}

input[type="submit"]:hover {
    background: #444444;
}