Mixed content

[Ghost93]

When Chrome loades page I get these:

Mixed Content: The page at 'https://cs109.github.io/2015/index.html' was loaded over HTTPS, but requested an insecure stylesheet 'http://cs109.github.io/2015/assets/themes/twitter/bootstrap/css/bootstrap.2.2.2.min.css'. This request has been blocked; the content must be served over HTTPS.
index.html:20 Mixed Content: The page at 'https://cs109.github.io/2015/index.html' was loaded over HTTPS, but requested an insecure stylesheet 'http://cs109.github.io/2015/assets/themes/twitter/css/style.css?body=1'. This request has been blocked; the content must be served over HTTPS.
index.html:21 Mixed Content: The page at 'https://cs109.github.io/2015/index.html' was loaded over HTTPS, but requested an insecure stylesheet 'http://cs109.github.io/2015/assets/themes/twitter/css/kbroman.css'. This request has been blocked; the content must be served over HTTPS.
index.html:1 Mixed Content: The page at 'https://cs109.github.io/2015/index.html' was loaded over HTTPS, but requested an insecure stylesheet 'http://cs109.github.io/2015/assets/themes/twitter/bootstrap/css/bootstrap.2.2.2.min.css'. This request has been blocked; the content must be served over HTTPS.
index.html:1 Mixed Content: The page at 'https://cs109.github.io/2015/index.html' was loaded over HTTPS, but requested an insecure stylesheet 'http://cs109.github.io/2015/assets/themes/twitter/css/style.css?body=1'. This request has been blocked; the content must be served over HTTPS.
index.html:1 Mixed Content: The page at 'https://cs109.github.io/2015/index.html' was loaded over HTTPS, but requested an insecure stylesheet 'http://cs109.github.io/2015/assets/themes/twitter/css/kbroman.css'. This request has been blocked; the content must be served over HTTPS.