CSS combination selector and css combination

CSS combination selector and css combination

1. Select all descendant elements with spaces

Div p

{
Background-color: yellow;
}

Select all descendant p elements of the div element, which can be child elements and child elements...

2. Greater than Id> select all direct child layer elements

Div> p
{
Background-color: yellow;
}

Select all direct child elements of the div element, with only one child element

3. Wave Number ~ Select All sibling elements at the same Layer
Div ~ P
{
Background-color: yellow;
}

Select All sibling elements in the same layer of the div Element

4. plus sign + select the first sibling element of the same Layer

Div + p
{
Background-color: yellow;
}

Select the first sibling element of the same layer of the div element.

5. p: first-child select the first p element

P: first-child
{
Color: blue;
}

Select the first p element.