Adding styles to the css

Hello
I just added some styles in the css for a ul as you can see in the attached image, then I called it with the following code:

<ul class=”vinetanube”>
<li style=”text-align: left;”>      Plataforma de video VOD
<li style=”text-align: left;”>      Live Streaming
<li style=”text-align: left;”>      Almacenamiento inteligente
<li style=”text-align: left;”>      Acelerador web CMS
<li style=”text-align: left;”>      Conectividad / CDN

But it doesnt work.

I look forward for your comments

Regards