Hopefully quick queries

Hey psipi,
Thank you for your patience and the links,
To change the background colour of the search box:

#top .main_color input[type='text']#s {
	background-color: gray;
}

To remove the comments from your post grid:

#top .avia-content-slider .slide-meta-comments,
#top .avia-content-slider .slide-meta-del {
	display: none;
}

For your single post /pause-stop-reset-podcast-news/ it looks link this was created with the Advanced Layout Builder so the other elements are not automatically added. If you compare this to your single post /april-parsons-recommends-pausestopreset/ which has these other elements link the tags, social sharing links, and related posts which are automatically added.

Best regards,
Mike

Hi,
For #2, this layout hides the image on mobile, to show try this css:

@media only screen and (max-width: 767px){
.responsive #top.single-post .template-blog .blog-meta {
    display: block;
}
.responsive #top.single-post .template-blog .entry-content-wrapper.standard-content {
	float: left;
}
}

For #1 three of the four featured images are using portfolio sized images (495×400) so their rendered aspect ratio is 216×175 the one image that is square “the podcast” is using an imagine that is 400×400 so it’s rendered aspect ratio is 216×216.
So you could change your featured images to use the same size as you did with your one image “the podcast” or you could try this css if you don’t mind the aspect ratio being a little off:

#top.page-id-448 #main .slide-entry-wrap .wp-post-image {
	height: 216px;
    width: 216px;
}

Best regards,
Mike