BUTTON in head module and image vidéo

Hello I would like, that my buttons are the same size, can you help me please?
http://prntscr.com/l9s8d1

I would also like the video location where the user can see an image before clicking on the video

1) Add to your custom.css

.btn-lg {
min-width:158px;
}

2) Could you clarify your question a bit more ? it is not clear at all what you want to accomplish

Hello, sorry for the delay,

So in my homepage, the buttons are not all the same size, look : http://prntscr.com/ldf50i

And in the module homevideo, they are not the thumbnail of the video, look : http://prntscr.com/ldf5li

Could you help me please ?

I fixed both problems , please check

Regards

pavit It's perfect ! Thank you very much !