Giulio Daprela

For menu out of the header you mean the menu on the sidebar, or the horizontal menu under the header?

If you are not technically skilled you can try the easy way with this plugin:

https://downloads.www.ads-software.com/plugin/orbisius-child-theme-creator.1.0.3.zip

If you prefer the hard way ??

https://codex.www.ads-software.com/Child_Themes

Generally speaking, you should copy the file footer.php into your child theme, and then edit this so that the functions inside it don’t show anything. If there is another php file that generates the footer content you should edit this one in the same way. The files in the child theme override those in the parent theme, so this should do the trick.

This code added to your custom CSS will probably do the trick, it worked on my pc.

#logo img {
   width: 100%;
}

It’s hard to say with no information. Can you post the CSS that you used?

I’m afraid this is as far as I can go. I’ve analyzed the file and I don’t find any other places where the height of the images is set. The theme code is also well documented, but it says nothing about this. There are no variables, no options, nothing. You must either contact the developer and ask him for help, or use a slider plugin.

The height of the image is coded in the PHP file class-header-slider.php.

If you want to change it, create a child theme and change the value in that file. I’ve found at least three lines of code that set this value. You have to change them all to be on the safe side.

You can use the directive

opacity: NN;

Where NN is a number between 0 and 1, where 0 means totally transparent, 1 totally opaque, and anything in between a different grade of transparency.

The social icons are from the plugin social ring, I believe.

Go under the Appearance menu and choose the option Customiz’it. Under ‘Front Page’ there’s a check box that allows you to give full width to the slider.

Is this that you want?

The problem is the theme in my opinion. There’s an inline CSS style, which by the way is considered bad practice today. The problem is that the instruction is wrong.
This is the html line of an image:
<img class="attachment-article-thumb wp-post-image" alt="rmfs" src="https://www.basketballcolorado.com/wp-content/uploads/2013/09/rmfs.jpg" style="width:NaN%;">

The directive style="width:NaN%;" doesn’t work because NaN% is an invalid value. If you replace that with 100% it works. Provided you have a child theme in place, add to your custom CSS the following instruction:

.attachment-article-thumb.wp-post-image {
width: 100%;
}

If that doesn’t work, try this one:

.attachment-article-thumb.wp-post-image {
width: 100% !important;
}

You could for example use a plugin like meteor slides for the bottom of the page. It allows you to add the slideshow in the form of a shortcode, so you can put it wherever you want. For the top you can keep the slideshow that comes with the theme

You’re welcome, happy to see your enthusiasm ??

If you need help with the next step just write here.

By the way, I just noticed that the instruction is wrong. There’s an hyphen missing. It’s not

background color

but

background-color

When I visit your website, over the header I can see this CSS instruction:
‘container_color’ = ‘#000033’,
This indicates that for some reason this instruction is not interpreted as CSS but as normal text.

The alignment of the elements in your code has no influence. Sometimes the CSS instructions that you add to your custom CSS are overridden by higher level CSS instructions. Without going into much details on how CSS works, you can try to add the !important directive, it usually works.

background color: #000033 !important;

There are also a few plugins that do the work for you.
Check out this plugin

https://www.ads-software.com/plugins/child-themify/