HTML and CSS

Is this HTML or CSS h1 { background-color:green; margin 25px x 35px}

What does CSS stand for?

What is CSS?

What does HTML stand for?

Is this HTML or CSS <h1>____</h1>

What does this do ___?

Which of these is an image tag: <li> </li>, <img src=----- a\lt=---- width=----heigh, <img src=----- alt=---- width=----height=->, <image src=----- alt=---- width=----height=->

What goes at the end of a web page? Options: </html>, nothing, html, </css>

Which is TRUE: CSS allows a web developer to define a specific set of style rules to apply to HTML elements on the page.