How to remove thin grey row from below slyder

Yes I’m sure it can. Do you have a link to your site so I can see what needs to be done?

take a look around line 1168 in your css and remove the bottom margin –

.slider .wrap {
    margin: 0 auto 20px;
    padding: 0;
    width: 1140px;
}

Change the 20px to 0 like this –

.slider .wrap {
    margin: 0 auto 0;
    padding: 0;
    width: 1140px;
}

I would need a link in order to know what’s going on. Screenshot/Code won’t be enough since I would need to inspect everything together. So just let me know once you have a link available and I can tell you exactly what needs to be done (it should be a quick fix).

The gray line that you’re seeing is coming from the plugin/code that you added inside of the widget –

<div id="mapp0_links" class="mapp-map-links"></div>

The css that it’s using is this –

.mapp-map-links {
background-color: #F0F0F0;
border-top: 1px solid lightgray;
border-bottom: 1px solid lightgray;
}

So if thats a plugin you’re using, then you would have to override it by adding some code in your style.css file like this –

.mapp-map-links {
background-color: none !important;
border: none !important;
}