Edit Design of "Blog Element"

Hi All,

I´m trying to edit some things of the general styling of the blog overview (my start page).
1. I tried adding a horizontal line between blog posts. I´ve found a solution you have given to someone else in this forum:

.post_delimiter {
    border-bottom: 1px solid #492e26;
    left: 0px !important;
}

But this does not work when creating own blog page with “content elements”->”Blog posts”
as there is no class .post_delimter when using it.
.post_delimeter is only available when using the “standard blog”.

The only way to get the same result (as far as I can deal with css) is to change the above code to

.entry-footer {
    border-bottom: 1px solid #492e26;
    left: 0px !important;
}

But I´m pretty sure there must be another way to do it. Is there a way to edit the “self created” blog page to do this?

2. Is there a way to move the feature picture of a raster layout blog (again self created via the element, not the “standard blog”) to the left or right instead of the middle? Maybe with a little 1px border around it?

Thanks in advance
best regards
Malanzo