Fixes for 10.3.0 regression

[doapp-ryanp]

Fixes #617

[beneliflo]

@doapp-ryanp at first we had issues with the width of the logos in IE and thank you for sent the PR. But I just check and works perfectly width auto instead of min-width 50px in others custom logo and in IE. You can check this locally and edit the PR with width auto if it's ok for you?

height 58px looks good 👍

[doapp-ryanp]

Yup width: auto works for me. thanks

[hzalaz]

@doapp-ryanp can you update your PR to use width: auto so we can merge it?

[doapp-ryanp]

@hzalaz done

[hzalaz]

Thanks!