=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Connection: close
Content-Length: 26171
Server: GitHub.com
Content-Type: text/html; charset=utf-8
permissions-policy: interest-cohort=()
Last-Modified: Mon, 10 Feb 2020 16:09:48 GMT
Access-Control-Allow-Origin: *
ETag: &quot;5e41804c-663b&quot;
expires: Thu, 25 Nov 2021 21:26:44 GMT
Cache-Control: max-age=600
x-proxy-cache: MISS
X-GitHub-Request-Id: 1C1C:2BA6:5322E3:58681D:619FFD3C
Accept-Ranges: bytes
Date: Thu, 25 Nov 2021 21:16:44 GMT
Via: 1.1 varnish
Age: 0
X-Served-By: cache-tyo11944-TYO
X-Cache: MISS
X-Cache-Hits: 0
X-Timer: S1637875005.692514,VS0,VE153
Vary: Accept-Encoding
X-Fastly-Request-ID: d570317290556710d3c5eceecaef3e0fa7ea039a

Request headers
================
HEAD /instagram.css/ HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: picturepan2.github.io
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.