widget text field: aligning issue

Hi All,
Pinnacle.
I have a question regarding the widget you can see here, right side, “Coming soon” section. I am struggling to make the pictures, yt embed code and the text exactly centered. I tried to embed youtube with the code generated by them and with kadence plugin code as well: the effect is the same. I know it’s 2 millimetres but it drives me crazy. What am I doing wrong? The code I put in the widget field can be found below. Shall I use some other widget for such a complex entry or is there a way to make it work with Text?

PS. As you can see, in the footer the same widget with pictures only is centered.

<p style="text-align: center;">1, 2, 4, 5, 9, 16, 22, 25, 26, 27.04.2016
31.05.2016
<a title="Traviata | PREMIERE" href="https://klarakolonits.com/la-traviata/"><img class="aligncenter wp-image-1883" src="https://klarakolonits.com/wp-content/uploads/2016/03/traviata-fb-feliratok-1.jpg" alt="Traviata" width="250" height="140" /></a></p>
<p style="text-align: center;">30.04.2016
<a title="Tchaikovsky|Dinyés" href="https://klarakolonits.com/reflecting-classics-tchaikovsky-dinyes/"><img class="aligncenter wp-image-1891" src="https://klarakolonits.com/wp-content/uploads/2015/10/promo-tchaikovsky-dinyes.jpg" alt="Tchaikovsky|Dinyés" width="250" height="140" /></a></p>
<p style="text-align: center;">03.05.2016</p>
<p style="text-align: center;"><iframe width="250" height="141" src="https://www.youtube.com/embed/gPsHAWdlZpU?rel=0&controls=0&showinfo=0" frameborder="0" allowfullscreen></iframe></p>
<a href="https://klarakolonits.com/mozart-requiem/"><p style="text-align: center;">Mozart: Requiem</a></p>
</p>