Sider Theme: How to remove the dash "--" below the title?

Hi there,

Try go into Additional CSS in the customizer:
https://docs.generatepress.com/article/adding-css/#additional-css

Then remove this block of code:

.single .entry-header::after,
.page .entry-header::after{
    border-bottom: 1px solid #000;
    content: "";
    display: block;
    margin-bottom: 40px;
    padding-bottom: 40px;
    width: 2.5%;
}

Let me know if this helps :)

Yes! That worked.

Thanks..

No problem :)