bilal-abdeen Hi.
- I believe it's a module which You should be able to attach to different pages or to disable it in module's list.
- Layout is set to show one column, You can force it by adding this css:
.blog .items {
width: 33%;
float: left;
box-sizing: border-box;
padding: 10px;
}
.blog .items:nth-child(3n+4) {
clear: both;
}
- Use this css:
#selectForm,
.contact-col1 {
display:none;
}
In menu item settings You have an option to add extra css class, there You can use one of fontawesome available classes to show an icon.
This is how it works. There is no way to add an image to a dropdown because of its build. CSS does not allow it.
Those are from LESS. After it being generated into css those errors will not cause any issue.