for your img tag need max-width: 100%; and height: auto; other than this fine.
I love the design of your portfolio page! The only constructive thing I would say is your image (of yourself) stretches down the page.
Apologies:) without loading the image
img class="img-fluid h-100 rounded-circle " src=“h://res.cloudinary.com/stevec23/image/upload/v1525968817/20160115_151936_crop.jpg” style=“max-width:100%; height:auto”>
line 45 <img class="img-fluid h-100 rounded-circle "
remove the h-100 to make it ( class="img-fluid rounded-circle "
Thank you for your kind feedback! May i ask for a suggestion to fix the stretching:). I am very new at this Bootstrap coding