Combining Multiple PSHtml Elements into a Single String

MultipleElements.ps1

$Html = (& {
        h1 "This is h1 Title in header"
        div {
            p {
                "This is simply a paragraph in a div."
            }
    
            h1 "This is h1"
            h2 "This is h2"
            h3 "This is h3"
            h4 "This is h4"
            h5 "This is h5"
            h6 "This is h6"
            strong "plop";"Woop"
        }
    
        h1 "My favorites Fruits"
    
        $Fruits = "Apple","Banana","Orange","Ananas"
    
        ul {
    
            foreach($fruit in $Fruits){
                li {
                    $fruit
                }
            }
        }
    }) -join ''

    New-UDHtml -Markup $Html