#login-form {
    width: 25%;
}

@media screen and (max-width: 768px){
    #login-form {
        width: 50%;
    }
}

@media screen and (max-width: 480px){
    #login-form {
        width: 75%;
    }
}

.footer-self {
    position: absolute;
    bottom: 20px;
}

.err-msg {
    color: red;
    font-size: 14px;
}

.normal-msg {
    color: green;
    font-size: 14px;
}

body {
    background-image: url(../img/index_bg.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    background-attachment: fixed;
    position: fixed;
    top: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    overflow-y: auto;
}