CSS ADVANED

Positoin

The position property specifies the type of positioning method used for an element

There are four different position values:

static
relative
fixed
absolute

Elements are then positioned using the top, bottom, left, and right properties. However, these properties will not work unless the position property is set first. They also work differently depending on the position value.

static

HTML elements are positioned static by default.

Static positioned elements are not affected by the top, bottom, left, and right properties.

An element with position: static; is not positioned in any special way; it is always positioned according to the normal flow of the page:

relative

An element with position: relative; is positioned relative to its normal position.
Setting the top, right, bottom, and left properties of a relatively-positioned element will cause it to be adjusted away from its normal position.
Other content will not be adjusted to fit into any gap left by the element.

Fixed

An element with position: fixed; is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled.
The top, right, bottom, and left properties are used to position the element.
A fixed element does not leave a gap in the page where it would normally have been located.

Absolute

An element with position: absolute; is positioned relative to the nearest positioned ancestor (instead of positioned relative to the viewport, like fixed)
A "positioned" element is one whose position is anything except static
If an absolute positioned element has no positioned ancestors, it uses the document body, and moves along with page scrolling.

Z-index

When elements are positioned, they can overlap other elements
The z-index property specifies the stack order of an element (which element should be placed in front of, or behind, the others)
An element can have a positive or negative stack order

Display

The display property specifies the type of box used for an HTML element

Overflow

The overflow property specifies what happens if content overflows an element's box.

Hide element

Clip

The clip property lets you specify a rectangle to clip an absolutely positioned element

Float and Clear

The float property specifies whether or not an element should float.
The clear property is used to control the behavior of floating elements.

Float and Clear

Inline block

Flexbox

Tasks

Each task should be in separate file
HTML should be valid

Task 1

Create such article block

The layout is flexible (its width is changed according to the browser width)

Task 2

Create this menu

Hover effect

Task 3

Create Dropdown top menu using CSS and HTML

Hover

Click

Hover menu item

Tips: Pseudo-class, checkbox, label, for, Adjacent selector

Task 4

Create thumbnails using three approaches:

Float
Inline-box
Flex-box

Task 5

Create such block

Using this layout

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Task 2</title>
</head>

<body>

    <div class="arrow-box">Lorem ipsum dolor sit amet, 
consectetur adipisicing elit. Praesentium soluta,
 enim assumenda nemo ullam ab cupiditate animi expedita est
 a quisquam quae nulla natus at inventore veniam, illo, vel debitis.</div>

</body>

</html>