CSS/HTML questions and answers latest 2023

CSS/HTML questions and answers latest 2023style a rule describing how to format a particular portion of a web page style sheet a set of style tags instructions that tell a web browser how to display the web page DOCTYPE tells the web browser what type of HTML the page uses the Internet interconnected network of computer networks HTML The set of markup symbols or codes placed in a file intended for display on a web browser hypertext text which contains links to other texts XHTML HTML organized for different operating systems so that your webpages appear correctly and consistently in web browsers why specify a doctype? transitional doctype provides a transition from older HTML to the newer strict doctype intended for newer HTML and XHTML CSS Cascading Style Sheets CSS gives you creative control over the layout and design of your web pages What are advantages of using CSS? internal style sheets a collection of style that's part of the web page's code external style sheets a text file containing all your CSS rules inline style sheets CSS rules put directly into a page's HTML RGB colors color value consisting of three numbers representing either percentages or numbers between 0 and 255 for each hue hue red, green, or blue value contains three hexadecimal numbers JPG graphics good for photos GIF Graphics Interchange Format PNG Portable Network Graphics 2 types of PNG 8 bit and 24 bit web-friendly file formats are small fixed-width layout regardless of browser's width, the page's width stays the same liquid layouts adjusts to fit the browser's width elastic layouts fixed-width design with type size flexibility absolute positioning determines an element's location by specifying a position float tag how can you create full-height columns relative positioning elements are placed relative to its position in HTML inside nested tags when and where do you use relative positioning? table spread-sheet like data table heading th row element td table row tr form the primary way visitors interact with a website form elements fieldset, legend, text fields, buttons, drop-down menus, checkboxes and radio buttons buttons what is the most used form tag? text fields text boxes on a form radio buttons when you can choose one item in a list check boxes when you can choose one or more items in a list form's action attribute input all variables in PHP start with which symbol? ?