HTML + CSS + JS

top, left, bottom, right

padding, margin, border

color, background-color, font-size

display: flex, justify-content, flex-direction

<page>

<aside>

<image>

<paragraph>

undefined

null

0

type error

.elementID {}

elementID {}

#elementID {}

*elementID {}

var

int

const

let

10

55

undefined

NaN

function myFunc[] {}

function myFunc() {}

def myFunc() {}

function:myFunc() {}

HTML files can be styled with CSS.

You can run JavaScript directly in an HTML file.

CSS can add dynamic behaviors to elements like clicks or form validation.

The <script> tag is used to add JavaScript to a page.

null

object

boolean

undefined

true

false

0

1