Increase Underline Length

How do I make the blue underlines under things like “fashion”, “connect with me” and “instagram” auto adjust to the length of the text. Or just make them longer in general?

Here is a link to my site for your reference:
I have also attached an image so you can see the problem.

Thanks so much!

Hi Anna Graziella,

I hope you are well today and thank you for your question.

You can try achieving this by adding the following CSS code in the Custom CSS option of your theme on the below path.

Admin Area -> Appearance -> Customize -> Activello Options -> Other -> Custom CSS

.post-inner-content .cat-item:after,
#secondary .widget-title:after{
    width: 100%;
    left: 0;
    margin-left: 0;

#secondary .widget> h3 {
    display: inline-block;

.post-inner-content .cat-item{
    display: table;
    margin: 0 auto 15px;

Best Regards,