#login_form {
    margin: auto;
    padding: 40px;
    width: 360px;
}

#login_form label {
    display: block;
    line-height: 36px;
}

input[type="text"],
input[type="email"],
input[type="password"] {
    width: 90%;
    height: 26px;
}

button {
    margin-top: 20px;
}