Welcome to level 7.
Like before first thing we need to do is
"Check the page source".

Our main clue at here is :
"Illuminate the darkness..."

What means by "Illuminate the darkness" ? Go google translate.

If you stuck click spoiler :

Spoiler:

You already get the answer.So what you need to do ?
At here we need to find password fill.
Where is it ?
Check back the page source.

Still stuck ?
Click the spoiler :

Spoiler:

I know all think the password is the animal right ?
And i know all will find the name of the animal.

The animal is "Sugar Glider"

But sadly the answer is not this !

Try to see back the image and check again properly.
You will see the word.

Still stuck ?
Click the spoiler :

Spoiler: