Grey Lines

I not understand what you mean exactly?

You want all the light grey lines gone below posts and on widget?

There is a small line between the recent posts and below the section headings.

In your Child Theme or CSS Editor thry this:

.widget-title {
    border-bottom: 1px solid #fff;
}

@hank3rd

Since you are not giving a clear answer to which lines you want to remove and if you want to keep any there here is a CSS code that will get rid of all lines on your website.

.panel-grid-cell .widget-title {
  border: none;
}
.srp-widget-singlepost {
  border: none;
}
.panel {
  box-shadow: none;
}
.widget ul li {
  border: none;
}

Add this code to Appearance >> Theme Options >> Other >> Custom CSS

Yes. I did want to remove all of them! Sorry, I got busy. I just tried the code and it worked like a charm!

I really appreciate the help.