Unresponsive image resizing in Yasmin theme

Can you add a 100% width to that image?

Do you see a section in the dashboard named, “Custom CSS” or “Jetpack”, or are you using a Child Theme?

You ought to add new styles externally, not within the theme’s files. Changes to the theme’s files will compromise the theme and be compromised when the theme updates.

External changes can be made using a Child Theme or through a plugin that provides Custom CSS functionality.

I recommend using the Jetpack plugin and its Custom CSS functionality to hold your CSS modifications.

Yeah, in your Child Theme stylesheet, add this;

#callout img {
 width: 100%;
}

http://www.w3schools.com/cssref/pr_dim_width.asp

And thanks to you for contributing to the WordPress.org community 🙂