Build a Product Landing Page input submit issue

Tell us what’s happening:
If you use bootstrap’s form in a navbar where you have that search glyph in it and since in task is stated input not button with id=“submit”, you could next to create said button, but style it with visibility: hidden since you don’t need second submit button. My remark is: It should be allowed to used either button or input. PS: Button with glyph should not use same id like “input”, can use some other id or whatever. Form elements by default are serialized by name … Unless you make some custom func for whatever reason … It submits regardless if it have id, but anyone who reads this should already know that.
Here’s a link to challenge, tell how it looks: Link
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User Agent is: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36.

Link to the challenge: