How do I change the following urls to https?

NginUS

Total number of items: 140
Number of insecure items: 4
Insecure URL: https://images.v-cdn.net/sprites-14-fff.png
Found in: https://nocturnalfeast.com/applications/dashboard/design/style.css?v=2.1.11

Insecure URL: https://images.v-cdn.net/sprites-14-000-bordered.png
Found in: https://nocturnalfeast.com/applications/dashboard/design/style.css?v=2.1.11

Insecure URL: https://images.v-cdn.net/youtube-overlay-button.png
Found in: https://nocturnalfeast.com/applications/dashboard/design/style.css?v=2.1.11

Insecure URL: http://themes.googleusercontent.com/static/fonts/bitter/v3/2PcBT6-VmYhQCus-O11S5-vvDin1pK8aKteLpeZ5c0A.woff
Found in: https://nocturnalfeast.com/themes/bittersweet/design/custom.css?v=1.1

NginUS

Got it down to this:

Total number of items: 140

Number of insecure items: 1
Insecure URL: http://themes.googleusercontent.com/static/fonts/bitter/v3/2PcBT6-VmYhQCus-O11S5-vvDin1pK8aKteLpeZ5c0A.woff
Found in: https://nocturnalfeast.com/themes/bittersweet/design/custom.css?v=1.1

Secure calls made to other websites:

cdn.vanillaforums.com SSL verification issue (Possibly mis-matched URL or bad intermediate cert.). Details:
ERROR: no certificate subject alternative name matches

NginUS

Now I got it down to this:

All 140 items called securely!
Secure calls made to other websites:

cdn.vanillaforums.com SSL verification issue (Possibly mis-matched URL or bad intermediate cert.). Details:
ERROR: no certificate subject alternative name matches

themes.googleusercontent.com is valid and secure.