html {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    min-height: 100%;
    background: #F1F1F1;
}

/* Animation Keyframes */
@keyframes scale_header {
    0% {
        max-height: 0px;
        margin-bottom: 0px;
        opacity: 0;
    }

    100% {
        max-height: 117px;
        margin-bottom: 25px;
        opacity: 1;
    }
}

@keyframes input_opacity {
    0% {
        transform: translateY(-10px);
        opacity: 0
    }

    100% {
        transform: translateY(0px);
        opacity: 1
    }
}

@keyframes text_opacity {
    0% {
        color: transparent;
    }
}

@keyframes error_before {
    0% {
        height: 5px;
        background: rgba(0, 0, 0, 0.156);
        color: transparent;
    }

    10% {
        height: 117px;
        background: #FFFFFF;
        color: #C62828
    }

    90% {
        height: 117px;
        background: #FFFFFF;
        color: #C62828
    }

    100% {
        height: 5px;
        background: rgba(0, 0, 0, 0.156);
        color: transparent;
    }
}


/* Login Form */
.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    width: 400px;
    height: auto;
    padding: 5px;
    box-sizing: border-box;
    margin:auto;
}

    .login-container img {
        width: 200px;
        margin: 0 0 20px 0;
    }

    .login-container p {
        align-self: flex-start;
        font-family: 'Roboto', sans-serif;
        font-size: 0.8rem;
        color: rgba(0, 0, 0, 0.5);
    }

        .login-container p a {
            color: rgba(0, 0, 0, 0.4);
        }

.login {
    position: relative;
    width: 100%;
    padding: 10px;
    margin: 0 0 10px 0;
    box-sizing: border-box;
    border-radius: 3px;
    background: #FAFAFA;
    overflow: hidden;
    animation: input_opacity 0.2s cubic-bezier(.55, 0, .1, 1);
    box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 1px 5px 0 rgba(0, 0, 0, 0.12), 0 3px 1px -2px rgba(0, 0, 0, 0.2);
}

    .login > header {
        position: relative;
        width: 100%;
        padding: 10px;
        margin: -10px -10px 25px -10px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        background: #009688;
        font-family: 'Roboto', sans-serif;
        font-size: 1.3rem;
        color: #FAFAFA;
        animation: scale_header 0.6s cubic-bezier(.55, 0, .1, 1), text_opacity 1s cubic-bezier(.55, 0, .1, 1);
        box-shadow: 0px 2px 2px 0px rgba(0, 0, 0, 0.14), 0px 1px 5px 0px rgba(0, 0, 0, 0.12), 0px 3px 1px -2px rgba(0, 0, 0, 0.2);
    }

        .login > header:before {
            content: '';
            display: flex;
            justify-content: center;
            align-items: center;
            position: absolute;
            width: 100%;
            height: 5px;
            padding: 10px;
            margin: -10px 0 0 -10px;
            box-sizing: border-box;
            background: rgba(0, 0, 0, 0.156);
            font-family: 'Roboto', sans-serif;
            font-size: 0.9rem;
            color: transparent;
            z-index: 5;
        }

    .login.error_1 > header:before,
    .login.error_2 > header:before {
        animation: error_before 3s cubic-bezier(.55, 0, .1, 1);
    }

    .login.error_1 > header:before {
        content: 'Invalid username or password!';
    }

    .login.error_2 > header:before {
        content: 'Invalid or expired Token!';
    }

    .login > header h2 {
        margin: 50px 0 10px 0;
    }

    .login > header h4 {
        font-size: 0.7em;
        animation: text_opacity 1.5s cubic-bezier(.55, 0, .1, 1);
        color: rgba(255, 255, 255, 0.4);
    }

/* Form */
.login-form {
    padding: 15px;
    box-sizing: border-box;
}


/* Inputs */
.login-input {
    position: relative;
    width: 100%;
    padding: 10px 5px;
    margin: 0 0 25px 0;
    border: none;
    border-bottom: 2px solid rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    background: transparent;
    font-size: 1rem;
    font-family: 'Roboto', sans-serif;
    font-weight: 500;
    opacity: 1;
    animation: input_opacity 0.8s cubic-bezier(.55, 0, .1, 1);
    transition: border-bottom 0.2s cubic-bezier(.55, 0, .1, 1);
}

    .login-input:focus {
        outline: none;
        border-bottom: 2px solid #E37F00;
    }


/* Submit Button */
.submit-container {
    display: flex;
    flex-direction: row;
    justify-content: flex-end;
    position: relative;
    padding: 10px;
    margin: 35px -25px -25px -25px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.login-button {
    padding: 10px;
    border: none;
    border-radius: 3px;
    background: transparent;
    font-family: 'Roboto', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    color: #E37F00;
    cursor: pointer;
    opacity: 1;
    animation: input_opacity 0.8s cubic-bezier(.55, 0, .1, 1);
    transition: background 0.2s ease-in-out;
}

    .login-button.raised {
        padding: 5px 10px;
        color: #FAFAFA;
        background: #E37F00;
        box-shadow: 0px 2px 2px 0px rgba(0, 0, 0, 0.137255), 0px 1px 5px 0px rgba(0, 0, 0, 0.117647), 0px 3px 1px -2px rgba(0, 0, 0, 0.2);
    }

    .login-button:hover {
        background: rgba(0, 0, 0, 0.05);
    }

    .login-button.raised:hover {
        background: #FDAB43;
    }