$f = 'c:\xampp\htdocs\Health_link\index.php'
$t = [IO.File]::ReadAllText($f)

$newBlock = '<div style="display:flex;align-items:center;gap:14px;flex-wrap:nowrap;">
        <a href="#kiosk" style="display:inline-flex;align-items:center;white-space:nowrap;background:linear-gradient(90deg,#a855f7,#3b82f6);color:#fff;padding:13px 28px;border-radius:30px;font-size:14px;font-weight:700;text-decoration:none;box-shadow:0 0 28px rgba(168,85,247,.5);">Explore DRM CarePoint&#8482;</a>
        <div class="watch" style="margin:0;background:rgba(168,85,247,.15);border:1.5px solid rgba(168,85,247,.6);border-radius:30px;padding:8px 18px 8px 8px;white-space:nowrap;">
          <div class="play" style="width:34px;height:34px;flex-shrink:0;box-shadow:0 0 14px #8f31ff;"><i class="fas fa-play" style="font-size:12px;"></i></div>
          <span style="font-size:13px;font-weight:600;">Watch How It Works</span>
        </div>
      </div>
    </div>'

$t = $t.Substring(0, 56170) + $newBlock + $t.Substring(56849)
[IO.File]::WriteAllText($f, $t)
Write-Host 'Done'
