Font issue after activating SLL

I brought a new domain for my site, I then activated SLL as it was displaying the ‘non-secure message’, in my bluehost dashboard I changed my URL to https instead of http. I am pretty new to all this so would appreciate some help! I am under the impression https is more secure than http and gets rid of the security warning, however my site still states ‘non-secure’. When using https my fonts are how they should be – however when using http they arent. Any help to what this means?

Cheers

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