Increasing width of my sidebar, currently it does not conform to my title length

[startup101]

How can I increase the width of my sidebar. Currently my title length is longer than the width.
I would also like to know how I can prevent wrapping of my posts? On my laptop, the title is warping to next line when i don't want it to

Thanks for your help

[startup101]

[startup101]

I was able to fix that but cannot fix the warping issue with my blog