Wednesday, October 11, 2023

CSS Default Browser Values for HTML Elements

Element Default CSS Value
a:link color: (internal value);
text-decoration: underline;
cursor: auto;
a:visited color: (internal value);
text-decoration: underline;
cursor: auto;
a:link:active color: (internal value);
a:visited:active color: (internal value);
abbr None.
address display: block;
font-style: italic;
area display: none;
article display: block;
aside display: block;
audio None.
b font-weight: bold;
base None.
bdi None.
bdo unicode-bidi: bidi-override;
blockquote display: block;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 40px;
margin-right: 40px;
body display: block;
margin: 8px;
body:focus outline: none;
br None.
button None
canvas None.
caption display: table-caption;
text-align: center;
cite font-style: italic;
code font-family: monospace;
col display: table-column;
colgroup display: table-column-group
datalist display: none;
dd display: block;
margin-left: 40px;
del text-decoration: line-through;
details display: block;
dfn font-style: italic;
dialog None.
div display: block;
dl display: block;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
dt display: block;
em font-style: italic;
embed:focus outline: none;
fieldset display: block;
margin-left: 2px;
margin-right: 2px;
padding-top: 0.35em;
padding-bottom: 0.625em;
padding-left: 0.75em;
padding-right: 0.75em;
border: 2px groove (internal value);
figcaption display: block;
figure display: block;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 40px;
margin-right: 40px;
footer display: block;
form display: block;
margin-top: 0em;
h1 display: block;
font-size: 2em;
margin-top: 0.67em;
margin-bottom: 0.67em;
margin-left: 0;
margin-right: 0;
font-weight: bold;
h2 display: block;
font-size: 1.5em;
margin-top: 0.83em;
margin-bottom: 0.83em;
margin-left: 0;
margin-right: 0;
font-weight: bold;
h3 display: block;
font-size: 1.17em;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
font-weight: bold;
h4 display: block;
margin-top: 1.33em;
margin-bottom: 1.33em;
margin-left: 0;
margin-right: 0;
font-weight: bold;
h5 display: block;
font-size: .83em;
margin-top: 1.67em;
margin-bottom: 1.67em;
margin-left: 0;
margin-right: 0;
font-weight: bold;
h6 display: block;
font-size: .67em;
margin-top: 2.33em;
margin-bottom: 2.33em;
margin-left: 0;
margin-right: 0;
font-weight: bold;
head display: none;
header display: block;
hr display: block;
margin-top: 0.5em;
margin-bottom: 0.5em;
margin-left: auto;
margin-right: auto;
border-style: inset;
border-width: 1px;
html display: block;
html:focus outline: none;
i font-style: italic;
iframe:focus outline: none;
iframe[seamless] display: block;
img display: inline-block;
input None.
ins text-decoration: underline;
kbd font-family: monospace;
label cursor: default;
legend display: block;
padding-left: 2px;
padding-right: 2px;
border: none;
li display: list-item;
link display: none;
main None.
map display: inline;
mark background-color: yellow;
color: black;
menu display: block;
list-style-type: disc;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
padding-left: 40px;
menuitem None.
meta None.
meter None.
nav display: block;
noscript None.
object:focus outline: none;
ol display: block;
list-style-type: decimal;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
padding-left: 40px;
optgroup None.
option None.
output display: inline;
p display: block;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
param display: none;
picture None.
pre display: block;
font-family: monospace;
white-space: pre;
margin: 1em 0;
progress None.
q display: inline;
q::before content: open-quote;
q::after content: close-quote;
rp None.
rt line-height: normal;
ruby None.
s text-decoration: line-through;
samp font-family: monospace;
script display: none;
section display: block;
select None.
small font-size: smaller;
source None.
span None.
strike text-decoration: line-through;
strong font-weight: bold;
style display: none;
sub vertical-align: sub;
font-size: smaller;
summary display: block;
sup vertical-align: super;
font-size: smaller;
table display: table;
border-collapse: separate;
border-spacing: 2px;
border-color: gray;
tbody display: table-row-group;
vertical-align: middle;
border-color: inherit;
td display: table-cell;
vertical-align: inherit;
template None.
textarea None.
tfoot display: table-footer-group;
vertical-align: middle;
border-color: inherit;
th display: table-cell;
vertical-align: inherit;
font-weight: bold;
text-align: center;
thead display: table-header-group;
vertical-align: middle;
border-color: inherit;
time None.
title display: none;
tr display: table-row;
vertical-align: inherit;
border-color: inherit;
track None.
u text-decoration: underline;
ul display: block;
list-style-type: disc;
margin-top: 1em;
margin-bottom: 1 em;
margin-left: 0;
margin-right: 0;
padding-left: 40px;
var font-style: italic;
video None.
wbr None.
html display: block;
html:focus outline: none;
i font-style: italic;
iframe:focus outline: none;
iframe[seamless] display: block;
img display: inline-block;
input None.
ins text-decoration: underline;
kbd font-family: monospace;
label cursor: default;
legend display: block;
padding-left: 2px;
padding-right: 2px;
border: none;
li display: list-item;
link display: none;
main None.
map display: inline;
mark background-color: yellow;
color: black;
menu display: block;
list-style-type: disc;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
padding-left: 40px;
menuitem None.
meta None.
meter None.
nav display: block;
noscript None.
object:focus outline: none;
ol display: block;
list-style-type: decimal;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
padding-left: 40px;
optgroup None.
option None.
output display: inline;
p display: block;
margin-top: 1em;
margin-bottom: 1em;
margin-left: 0;
margin-right: 0;
param display: none;
picture None.
pre display: block;
font-family: monospace;
white-space: pre;
margin: 1em 0;
progress None.
q display: inline;
q::before content: open-quote;
q::after content: close-quote;
rp None.
rt line-height: normal;
ruby None.
s text-decoration: line-through;
samp font-family: monospace;
script display: none;
section display: block;
select None.
small font-size: smaller;
source None.
span None.
strike text-decoration: line-through;
strong font-weight: bold;
style display: none;
sub vertical-align: sub;
font-size: smaller;
summary display: block;
sup vertical-align: super;
font-size: smaller;
table display: table;
border-collapse: separate;
border-spacing: 2px;
border-color: gray;
tbody display: table-row-group;
vertical-align: middle;
border-color: inherit;
td display: table-cell;
vertical-align: inherit;
template None.
textarea None.
tfoot display: table-footer-group;
vertical-align: middle;
border-color: inherit;
th display: table-cell;
vertical-align: inherit;
font-weight: bold;
text-align: center;
thead display: table-header-group;
vertical-align: middle;
border-color: inherit;
time None.
title display: none;
tr display: table-row;
vertical-align: inherit;
border-color: inherit;
track None.
u text-decoration: underline;
ul display: block;
list-style-type: disc;
margin-top: 1em;
margin-bottom: 1 em;
margin-left: 0;
margin-right: 0;
padding-left: 40px;
var font-style: italic;
video None.
wbr None.
***** 
Selector Example Example description
.class .intro Selects all elements with class="intro"
.class1.class2 .name1.name2 Selects all elements with both name1 and name2 set within its class attribute
.class1 .class2 .name1 .name2 Selects all elements with name2 that is a descendant of an element with name1
#id #firstname Selects the element with id="firstname"
* * Selects all elements
element p Selects all <p> elements
element.class p.intro Selects all <p> elements with class="intro"
element,element div, p Selects all <div> elements and all <p> elements
element element div p Selects all <p> elements inside <div> elements
element>element div > p Selects all <p> elements where the parent is a <div> element
element+element div + p Selects the first <p> element that is placed immediately after <div> elements
element1~element2 p ~ ul Selects every <ul> element that is preceded by a <p> element
[attribute] [target] Selects all elements with a target attribute
[attribute=value] [target="_blank"] Selects all elements with target="_blank"
[attribute~=value] [title~="flower"] Selects all elements with a title attribute containing the word "flower"
[attribute|=value] [lang|="en"] Selects all elements with a lang attribute value equal to "en" or starting with "en-"
[attribute^=value] a[href^="https"] Selects every <a> element whose href attribute value begins with "https"
[attribute$=value] a[href$=".pdf"] Selects every <a> element whose href attribute value ends with ".pdf"
[attribute*=value] a[href*="w3schools"] Selects every <a> element whose href attribute value contains the substring "w3schools"
:active a:active Selects the active link
::after p::after Insert something after the content of each <p> element
::before p::before Insert something before the content of each <p> element
:checked input:checked Selects every checked <input> element
:default input:default Selects the default <input> element
:disabled input:disabled Selects every disabled <input> element
:empty p:empty Selects every <p> element that has no children (including text nodes)
:enabled input:enabled Selects every enabled <input> element
:first-child p:first-child Selects every <p> element that is the first child of its parent
::first-letter p::first-letter Selects the first letter of every <p> element
::first-line p::first-line Selects the first line of every <p> element
:first-of-type p:first-of-type Selects every <p> element that is the first <p> element of its parent
:focus input:focus Selects the input element which has focus
:fullscreen :fullscreen Selects the element that is in full-screen mode
:hover a:hover Selects links on mouse over
:in-range input:in-range Selects input elements with a value within a specified range
:indeterminate input:indeterminate Selects input elements that are in an indeterminate state
:invalid input:invalid Selects all input elements with an invalid value
:lang(language) p:lang(it) Selects every <p> element with a lang attribute equal to "it" (Italian)
:last-child p:last-child Selects every <p> element that is the last child of its parent
:last-of-type p:last-of-type Selects every <p> element that is the last <p> element of its parent
:link a:link Selects all unvisited links
::marker ::marker Selects the markers of list items
:not(selector) :not(p) Selects every element that is not a <p> element
:nth-child(n) p:nth-child(2) Selects every <p> element that is the second child of its parent
:nth-last-child(n) p:nth-last-child(2) Selects every <p> element that is the second child of its parent, counting from the last child
:nth-last-of-type(n) p:nth-last-of-type(2) Selects every <p> element that is the second <p> element of its parent, counting from the last child
:nth-of-type(n) p:nth-of-type(2) Selects every <p> element that is the second <p> element of its parent
:only-of-type p:only-of-type Selects every <p> element that is the only <p> element of its parent
:only-child p:only-child Selects every <p> element that is the only child of its parent
:optional input:optional Selects input elements with no "required" attribute
:out-of-range input:out-of-range Selects input elements with a value outside a specified range
::placeholder input::placeholder Selects input elements with the "placeholder" attribute specified
:read-only input:read-only Selects input elements with the "readonly" attribute specified
:read-write input:read-write Selects input elements with the "readonly" attribute NOT specified
:required input:required Selects input elements with the "required" attribute specified
:root :root Selects the document's root element
::selection ::selection Selects the portion of an element that is selected by a user
:target #news:target Selects the current active #news element (clicked on a URL containing that anchor name)
:valid input:valid Selects all input elements with a valid value
:visited a:visited Selects all visited links
 ******

All CSS Combinator Selectors

Selector Example Example description
element element div p Selects all <p> elements inside <div> elements
element>element div > p Selects all <p> elements where the parent is a <div> element
element+element div + p Selects the first <p> element that are placed immediately after <div> elements
element1~element2 p ~ ul Selects every <ul> element that are preceded by a <p> element