Set the margin equally on top and bottom of the element
Set the margin equally on left and right of the element
Set the margin equally on all sides of the element.
It is uncertain what will happen
margin
indent
padding
gap
padding: 20px 30px 15px 10px
padding: 20px 15px 30px 10px
padding: 15px 30px 10px 20px
padding: 30px 15px 20px 10px
display: none;
visibility: hidden;
display: hidden;
visibility: none;
absolute
fixed
static
sticky
border
none of the above
max-height
max-width
min-height
min-width
overflow-y
overflow-x
overflow-width
overflow -z
normal
italic
oblique
overline
underline
line-through
inline
Statement 1) is correct and 2) is incorrect
Statement 1) is incorrect and 2) is correct
Statement 1) and 2) are both correct
Statement 1) and 2) are both incorrect
margin: 20px 20px 30px 30px
margin: 30px 20px
margin: 20px 30px
margin: 30px 30px 20px 20px
background-size: contain;
background-repeat: no-repeat;
background-size: cover;
Selector and property
Name and content
Head section and body section
None
Structural
Presentational
Markup
Behavioral
property-name=value
property-name : value
property-name= value
property-name:value;
External styles
Inline styles
Embedded styles
Html styles
<Link> tag
<Style> tag
<Script> tag
@media
Hash
Plus
Dot
:selected
:link
:target
:enabled