Please let me know what is this strange mark and delete it

Please see attached image.

I found something strange mark on my Website.

What is this?

Please explain to me and delete this.

I was trying to delete this but I can not find in HTML.

Is it Virus or something?

I don't have idea.

Give me some info,

Taidot: CSS, HTML, HTML5, Javascript, Verkkosivujen testaus

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Tietoa työnantajasta:
( 103 arvostelua ) Shibuya, Japan

Projektin tunnus: #4226184

4 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_18% %project_currencyDetails_sign_sub_19%/tunti tähän työhön


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(1 arvostelu)

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$30 USD / tunti
(27 arvostelua)

Hi, kindly check your pmb for more details

$4 USD / tunti
(8 arvostelua)

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$8 USD / tunti
(4 arvostelua)