I have that site code inside body
HTML:
<ul id="navlist">
<li class="first">
Home
</li>
<li>
Store
</li>
</ul>
and this style CSS:
ul#navlist
{
float: right;
}
ul#navlist li
{
display: inline;
}
ul#navlist li a
{
border-left: 1px dotted #8A8575;
padding: 10px;
margin-top: 10px;
color: #8A8575;
text-decoration: none;
float: left;
}
ul#navlist li:first-child a
{
border: none;
}
ul#navlist li a:hover
{
color: #F6855E;
}
I try to understand what means and syntax is of:
ul#navlist li:first-child a
componentClass#class componentClass:class(???) componentClass
What is first-child? Is there a second childmodificator? Are those css blocks are considered by logical alternative?
First-child is first child of parent element - http://www.quirksmode.org/css/selectors/firstchild.html
In this case, li:first-child is the same as li.first.
For second child, you can use li:nth-child(2) (unsupported in IE <= 8), li.first + li or :first-child + li (in this case where we speak about lis) - siblings or first element. In this case you can use simplier li + li (all lis except the first one). Etc.
Look what options you have when you want to fire Xth element - http://www.quirksmode.org/css/selectors/#t50 (+ you can use siblings selector to fire next element (+), or all next siblings selector (~)), etc.
Related
I have just started learning css. I have assumed that a class is a way of grouping styling information.
I'm trying to understand CSS pagination. In the example, it is written
ul.pagination {
display: inline-block;
padding: 0;
margin: 0;
}
ul.pagination li { display: inline;}
ul.pagination li a {
color: black;
float: left;
padding: 8px 16px;
text-decoration: none;
}
pagination is a class. what does it mean when they write ul.pagination li and
ul.pagination li a?
ul.pagination li a has a float left; style. what will this achieve?
When you have the following code block in your HTML document:
<ul class="pagination">
<li>
</li>
<li>
</li>
<li>
</li>
</ul>
and you would like the style this list, list items, and the links separately.
ul.pagination {
display: inline-block;
padding: 0;
margin: 0;
}
The CSS block above will affect your list (<ul></ul>).
ul.pagination li {
display: inline;
}
This one will affect each list item (<li></li>) in your list.
ul.pagination li a {
color: black;
float: left;
padding: 8px 16px;
text-decoration: none;
}
and the last one will affect each link (<a></a>) inside of your list items.
float: left is used to have a horizontal list (for example menu). You can learn more from this link: http://www.w3schools.com/cssref/pr_class_float.asp
Lastly, I also suggest you to read the CSS Selectors in order to understand the logic: http://www.w3schools.com/cssref/css_selectors.asp
I recommend you read an authoritative source on CSS selectors: https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_started/Selectors
Note that the term "selector" refers to both a rule's selector (everything before the {) but also to individual components of the selector, so h1.foo p.bar is a selector, as is just h1.foo and p.bar, for example).
In response to your questions directly:
what does it mean when they write ul.pagination li and ul.pagination li a?
When a space character appears between two selectors (e.g. between ul.pagination and li it means "descendant", so any <li> element which appears underneath an <ul class="pagination"> will be matched, no matter how deep it is (as opposed to the > selector, as in ul.pagination > li, which only selects <li> elements that are immediate children of <ul class="pagination">.
CSS rules match and apply to only the deepest element in the rule, so ul li will only apply style rules to the <li>, but ul li a will only apply style rules to <a> elements.
ul.pagination li a has a float left; style. what will this achieve?
It means that every <a> element that is a descendent of a <li> which in-turn is a descendent of a <ul class="pagination"> will have the property float: left applied to it.
Based on w3c the correct way in HTML for a nested list is.
<ul>
<li>Coffee</li>
<li>Tea
<ul>
<li>Black tea</li>
<li>Green tea</li>
</ul>
</li>
<li>Milk</li>
</ul>
However I want a border at the bottom of each item in the list, the following code underlines them all but Tea.
li {
border-bottom: 1px solid purple;
}
Any suggestions?
if you mean border bottom on everything you will need to do something like this:
li {
border-bottom: 1px solid purple;
}
li > ul {
border-top: 1px solid purple;
}
li > ul > li:last-child {
border: none;
}
Example
Alternative
Same length lines (but you'll have to find a way to indent the second level bullets)
Otherwise just use text-dexoration
Maybe you can use
text-decoration: underline
This applies to the text in the element.
Your problem is that the li containing tea actually does have a border, but it's a bottom border, so it is below the nested li.
Instead of using text-decoration you can also wrap the text in another element (span or div) inside the li elements, and apply the border to that. Such a solution using div is especially useful if you want the border to be the full width of the element instead of the text alone.
The "Tea" li DOES have a border it's just 'masked' by the border of the last submenu li
See JSfiddle
li {
border-bottom:3px solid red;
}
li ul li {
border-bottom:3px solid green;
}
As everyone above mentioned that the border actually exists for text "Tea" which is at very bottom because li element has display: list-item assigned by default. You can make it visible by using display: inline but keep in mind that you will lose the features of li element such as list-style-type because they are only applicable for display: list-item.
li {
border-bottom: 1px solid purple;
display: inline;
}
li:after {
content:"";
display: block;
}
Working Fiddle
This problem is caused by the fact that the "Tea" li tag contains not just 'Tea', but every other ul and li tag pair except for the one containing "Milk". The "Tea" li is getting underlined, which is actually appearing under the 'Green Tea' underline (if you look closely, you should notice a double underline there, especially if you add padding to you li tags.) Your best bet in this situation (if you are building the list programmatically) is to wrap the li items in another tag:
<ul>
<li><span>Coffee</div></li>
<li><span>Tea</span>
<ul>
<li><span>Black tea</span></li>
<li><span>Green tea</span></li>
</ul>
</li>
<li><span>Milk<span></li>
</ul>
then change your code to:
li span{
border-bottom: 1px solid purple;
}
This will ensure that the text gets underlined, and not the li tag containing the text.
Edit:=====================
This is the same thing that Mr Green is recommending in his comment
Give it a class add add display: inline-block so:
<ul>
<li>
<ul>
<li class="underline">
Some stuff here
</li>
</ul>
</li>
</ul>
and in your css:
.underline {
display: inline-block;
border-bottom: 1px #CCCCCC solid;
}
There are different ways to solve it, I went with this.
li {
border-bottom: 1px solid purple;
}
li > ul > li:first-child {
border-top: 1px solid purple;
}
li > ul > li:last-child {
border: none;
}
I have one CSS file which I found it in one website, but I have a confusion about it. The code is:
ul li a {
background-color: FFFFFF;
border: 1px solid 86B3E6;
color: 2F62AC;
display: block;
font-size: 17px;
font-weight: bold;
margin-bottom: -1px;
padding: 12px 10px;
text-decoration: none;
direction:rtl;
}
So, what I am styling here? as I know, it should be (( a )) tag, so if I add
display:inline-block;
to (( ul )) tag styling which I found here (( UL display: block )) it should work, but unfortunately I failed to make it.
Maybe I will have one more question later, but for timing i want to understand the code and correct my information.
Best regards and thanks in advance,
Gharib
edit:
I want to use both inline-block and block, and here is my full code:
ul.ablock {
display: block;
}
ul.aninline {
display: inline-block;
float: right;
width: 50%;
}
a {
background-color: FFFFFF;
border: 1px solid 86B3E6;
color: 2F62AC;
display: block;
font-size: 17px;
font-weight: bold;
margin-bottom: -1px;
padding: 12px 10px;
text-decoration: none;
direction:rtl;
-webkit-border-top-left-radius: 8px;
-webkit-border-top-right-radius: 8px;
-webkit-border-bottom-left-radius: 8px;
-webkit-border-bottom-right-radius: 8px;
}
a:active, a:hover {
background-color:2F62AC;
color:FFFFFF;
}
and the html is something like:
<ul class="ablock">
<li><div align="center">Find</div></li>
</ul>
<ul class="aninline">
<li><div align="center">Back</div></li>
<li><div align="center">Next</div></li>
</ul>
The above selector will target all a elements which are nested under li which is further nested under ul, that's a general element selector, which will target all the a element which falls in that pattern. It is better to be specific and use a class instead, like
ul.class_name li a {
/* Styles goes here */
}
The above selector will only target a elements which are nested under li which are further nested under an ul element having a class called .class_name
As you commented, it seems like you want to target a ul element, now instead of using something like
ul {
/* Styles goes here */
}
Will apply the styles to all the ul elements, instead, be specific, either assign a class to your ul element and use a selector like
ul.class_name {
/* Styles goes here */
}
Or you can also use a nested selector like
div.wrapper_div ul {
/* Styles goes here */
}
Here, in the above selector we are selecting all the ul which are nested under .wrapper_div.
Just a side note, you seem to be confused so don't wanna confuse you more, so don't read this, you can simply ignore, but if you want to learn, just make sure that, if you are targeting ul, make sure you use > selector which will select direct child, as users tend to nest a ul element under li, say for example dropdown menu, this is common, so it is better to use a selector like
div.class_name > ul { /* Selects first level ul elements */
/* Styles goes here */
}
ul > li > ul { /* Selects nested level ul elements */
/* Styles goes here */
}
You are targeting the <a> element here. The reason for the ul and li is that, you're targeting a specific nesting of a. Namely, you are targeting a <a> that is a descendant of <li> that is in turn, a descendant of a <ul>.
If you want to add dispay: inline-block to all <ul> elements then above the rule for ul li a you want to add:
ul { display: inline-block; }
I've got a navigation menu. But the menu get's wild.
The submenu class (this is the dropdown if you hover firstmenu). 'firstmenu' are the main areas of the site, hence the first level of the list.
Problem: Submenu get's the Firstmenus values. Even the tiny arrow background: url(images/nav-arrow.png) no-repeat center bottom; in - BUT WHY?!
We already looked into this, split up the code, removed typo3, all JavaScript and ended up with this css code:
#firstmenu {
list-style: none;
margin: 0;
padding: 0;
}
#firstmenu .firstLevel {
float: left;
}
#firstmenu .firstLevel a {
display: block;
font-size: 1.166em;
font-weight: 600;
line-height: normal;
color: #333;
padding: 41px 20px 26px;
margin-bottom: 4px;
}
#firstmenu .firstLevel .current a,
#firstmenu .firstLevel a:hover,
#firstmenu .firstLevel a.selected {
color: #fff;
background: url(images/nav-arrow.png) no-repeat center bottom;
}
#firstmenu .firstLevel a:hover,
#firstmenu .firstLevel a.selected {
background-color: #333;
}
/* Drop-Down Menus */
.submenu {
list-style: none;
margin: 0;
padding: 0;
position: absolute;
}
.submenu > ul {
top: 4px !important;
}
.submenu .secoundLevel {
width: 200px;
background: #fca500;
}
.submenu .secoundLevel a {
display: block;
color: #fff;
padding: 8px 15px;
border-top: 1px solid rgba(255,255,255,0.2);
}
.submenu .secoundLevel a:hover {
background-color: #333;
border-color: #1a1a1a;
}
.submenu .secoundLevel:first-child a {
border-top: none;
}
Anyone knows the fix?
EDIT, html:
<nav id="nav">
<ul id="firstmenu" class="clearfix">
<li class="firstLevel"><a href="index.php?id=99" >Startseite</a></li>
<li class="firstLevel current">Rootserver
<ul class="submenu">
<li class="secoundLevel"><a href="index.php?id=96" >Vergleich</a></li>
</ul>
</li>
<li class="firstLevel">Voiceserver
<ul class="submenu">
<li class="secoundLevel">Preisvergleich</li>
</ul>
</li>
</ul>
</nav>
I think the problem is a matter of understanding of CSS selectors. This selector:
#firstmenu .firstLevel a.selected {
color: #fff;
background: url(images/nav-arrow.png) no-repeat center bottom;
}
States the following: Match ALL <a> links that have a parent with class name firstLevel and it having a parent with ID firstmenu
That means this HTML bit matches:
<ul id="firstmenu" class="clearfix">
// snip
<li class="firstLevel current">Rootserver
<ul class="submenu">
<li class="secoundLevel">Vergleich</li>
</ul>
</li>
// snip
because the "secondLevel" menu has an anchor tag (<a>) that is a child (of any order, ie child, grandchild, great-grandchild, etc) of .firstLevel which is a child (of any order) of #firstmenu.
This is exactly how CSS is suppose to work but there ways to prevent what you're seeing.
The first option is to use the child selector (what I sometimes refer to as "direct descendent" selector) >
.firstLevel > a:hover{ /* code */ }
This selector specifically states: "all anchor tag that you hover which are directly descendent from .firstLevel, but no deeper.
Which means, it matches:
<li class="firstLevel">A</li>
but not the link with value "B" below
<li class="firstLevel">A
<ul>
<li><a href="#">B</b></li>
</ul>
</li>
because the second <a> tag is not directly descendant of .firstLevel, there's a <ul> and <li> between them.
The second option is to "overwrite" the previous style by having another rule with a higher CSS specificity.
#firstmenu .firstLevel .submenu a.selected {
background-image: none; /* remove the arrow from drop-down menus*/
}
There's reasons for doing one or the other.
Using the child selector is good when the styles are very specific to that element. You don't want ANY of the styles to carry over to further elements.
Use the "replacement" technique (for lack of a better term) when you're looking to modify only one specific style from another element. Ie. You want to keep the color, font, font-weight, but only want to remove the background image.
I hope that helps!
Here's some (bad) fiddles showing the base case:
http://jsfiddle.net/zTCbF/
with child selector
http://jsfiddle.net/zTCbF/1/
with the replacement technique
http://jsfiddle.net/zTCbF/2/
#firstmenu .firstLevel a {
This will target any anchor tag under .firstLevel including those under .secondLevel
So when you say...
#firstmenu .firstLevel a:hover,
You are applying your hover styles to ALL anchor tags that are descendants of .firstLevel
You want to say ...
#firstmenu .firstLevel > a {
Which will target only anchor tags that are a direct descendant of .firstLevel
I'm trying to figure out if I'm totally mis-understanding something here.
I have a menu and submenu (dropdown style using only CSS, no javascript) and for some reason the sub-menu styles (defined by .submenu li a) always shows up at the same style as the parent a (defined by #menu li a) even though the submenu CSS styles show up AFTER the top menu styles.
Am I mis-understanding CSS rules? I thought features defined LATER and at a lower level override the top level (for example, inline style will always override style.css styles). I'm attaching a screenshot off Firebug that shows crossing out the font sizes defined on line 275 in favour of styles defined at line 225, on the parent DOM objects.
My DOM looks like this to simplify it:
<ul id="menu">
<li>
about us
<ul class="submenu">
<li>
Testimonials
</li>
</ul>
</li>
<li>
listings
</li>
<li>
MLS® Search
</li>
<li>
City Guide
<ul class="submenu">
<li>
The West End
</li>
<li>
Coal Harbour
</li>
</ul>
</li>
<li>
blog
</li>
</ul>
And my CSS looks like this.
#menu li a:link, #menu li a:visited {
color:#333;
text-decoration:none;
font-size:16px;
font-weight: bold;
padding-bottom: 3px;
text-transform: uppercase;
}
#menu li a:hover {
color:#333;
background-image: url('../images/pink_dots.png');
background-position: bottom left;
background-repeat: repeat-x;
}
#menu li a:active {
position:relative;
color:#333;
}
.submenu {
position:absolute;
left: -9999px;
display: block;
background-color: #DD2D77;
padding:0px 0px 0px 0px;
margin: 0px;
top:16px;
z-index: 20;
}
#menu li:hover .submenu {
left: -5px;
}
.submenu li {
text-align: left !important;
margin:0px !important;
padding: 2px 0px 3px 0px !important;
position:relative;
display: block;
width: auto;
float: none;
text-align: left;
}
.submenu li:hover {
}
.submenu li a:link, .submenu li a:visited {
color:#fff;
text-align: left;
font-size:12px;
font-weight: normal;
margin: 0px;
white-space:nowrap;
display: block;
padding:3px 7px 5px 7px !important;
min-width: auto;
zoom: normal;
}
.submenu li a:hover, .submenu li a:active {
color:#fff !important;
background-image: none !important;
background-color: #73AA12;
}
The id selector has more specificity than your other selector.
Increase the specificity, which is favoured over !important.
Yes; you are misunderstanding how CSS works.
http://www.htmldog.com/guides/cssadvanced/specificity/
The order in which you define rules in the CSS file means nothing. The selector determines which rules apply and when.
The axiom behind CSS is - the more specific your selectors are, the more precedence they take over less specific ones.
This is how anchor styles work for instance. To show an underline only on hover:
a:hover
{
text-decoration: underline;
}
a
{
text-decoration: none;
}
Even though the less specific rule is defined later, the more specific rule (an anchor tag that is also mouse hovered) overrules the more general rule.
You're correct in saying that rules declared later in the cascade take precedence but only if they are at an equal or higher specificity.
Your first style #main li a uses an ID as the context whereas the second style .submenu li a uses a CLASS as the context. An ID holds more specificity than the CLASS, so it overrides the .submenu.
You need to read up a bit on CSS Specificity:
http://www.htmldog.com/guides/cssadvanced/specificity/
http://coding.smashingmagazine.com/2007/07/27/css-specificity-things-you-should-know/
http://coding.smashingmagazine.com/2010/04/07/css-specificity-and-inheritance/
http://css-tricks.com/specifics-on-css-specificity/
You could do a quick fix and declare #main > li a - which will only apply to anchors inside list items that are direct descendants of the #main element. Then, your .submenu li a rule will be applied to your submenu items.
Here is a specificity calculator that you can add as a bookmark in your browser: http://www.westciv.com/mri/
When you click it, it will open a window that you can either type a selector into, or you can click an element on the page and it will suggest the selector that you should use (showing you the path it took to get there).
It may help as a learning tool.