CSS Flashcards
What are the names of the individual pieces of a CSS rule?
A selector, declaration, property, value
In CSS, how do you select elements by their class attribute?
Period before the selector
In CSS, how do you select elements by their type?
Match the elements name
In CSS, how do you select an element by its id attribute?
Hash before the selector
Name three different types of values you can use to specify colors in CSS.
Name, RGB, Hex Code, RGBA, etc.
What CSS properties make up the box model?
padding, border, margin
Which CSS property pushes boxes away from each other?
margin
Which CSS property add space between a box’s content and its border?
padding
What is a pseudo-class?
a CSS added keyword to a selector that specifies a certain state of that selected element
What are CSS pseudo-classes useful for?
They allow you to apply style that gives effect to elements
Name at least two units of type size in CSS.
em, px, percentages
What CSS property controls the font used for the text inside an element?
font-family
What is the default flex-direction of a flex container?
row, left to right
What is the default flex-wrap of a flex container?
nowrap
Why do two div elements “vertically stack” on one another by default?
because they are block elements
What is the default flex-direction of an element with display: flex?
row, left to right
What is the default value for the position property of HTML elements?
static
How does setting position: relative on an element affect document flow?
It does not
How does setting position: relative on an element affect where it appears on the page?
it does not affect where it is on the page at all, but it affects where the other elements get placed
How does setting position: absolute on an element affect document flow?
it no longer has a place in document flow
How does setting position: absolute on an element affect where it appears on the page?
it goes through each of its parent elements until it finds a parent element that is not static.
How do you constrain an absolutely positioned element to a containing block?
set the parent to relative
What are the four box offset properties?
top, right, bottom, left
What are the four components of “the Cascade”.
source order, specificity, inheritance, !important.
What does the term “source order” mean with respect to CSS?
in what order the code is written in the file.
How is it possible for the styles of an element to be applied to its children as well without an additional CSS rule?
if it is an inherited property
List the three selector types in order of increasing specificity.
element type, class, id
Why is using !important considered bad practice?
It makes debugging more difficult by breaking the natural cascading in your stylesheets
What does the transform property do?
it allows a few different ways to adjust the element.
Give four examples of CSS transform functions.
rotate, scale, skew, and translate.
The transition property is shorthand for which four CSS properties?
transition-property, transition-duration, transition-timing-function, and transition-delay
Which HTML meta tag is used in mobile-responsive web pages?
meta name viewport
What is the event.target?
the object that the event was used on
Why is it possible to listen for events on one element that actually happen its descendent elements?
because of event flow
What DOM element property tells you what type of element it is?
tagName property
What does the element.closest() method take as its argument and what does it return?
it takes a string of the CSS selector and returns the closest ancestor with that string name
How can you remove an element from the DOM?
you can use the remove method
If you wanted to insert new clickable DOM elements into the page using JavaScript, how could you avoid adding an event listener to every new element individually?
by using event delegation.
What is a breakpoint in responsive Web design?
The points at which a media query is introduced
What is the advantage of using a percentage (e.g. 50%) width instead of a fixed (e.g. px) width for a “column” class in a responsive layout?
the percentage changes with the window size while the fixed value stays as it is
If you introduce CSS rules for a smaller min-width after the styles for a larger min-width in your style sheet, the CSS rules for the smaller min-width will “win”. Why is that?
because of source order
