Often when writing the scss for new at-breakpoints--also even breakpoints that do not change the layout, but nonetheless still change styles at those breakpoints--if I do not specify exactly as I did higher in the code, the at-breakpoint will not override the previous css. For example, if in the first instantiation of scss I write the layout for the header. If I write the header width, then next inside of it the nav, and inside of that the ul, and inside of that the li, etc. If I want to change it later, I can't just nest, for example, a li inside the header in order to change the font. I have to re-list the entire code as before to maintain the same order of specificity.
Am I missing a really obvious way around this?
An example might be:
#about {
#include span-columns(24,24);
#contain_about {
section {
#include span-columns(20,20);
}
#profiles {
#include span-columns(20,20);
.profile {
#include span-columns(20,20);
.expandInside {
#include span-columns(20,20);
.hgroupInside {
h1.description {
font-size: 1.25em;
}
}
}
}
}
}
}
Just to change the font-size for that element.
Related
So I'm currently doing some styling, following the BEM standard.
An example of what I'm doing could be this:
.block{
&__element {
}
}
what i would like to do is this:
// file a
.block {
...
}
-
// file b
// add magic to reference the `block`class in file a
&__elelemnt {
...
}
What I'm currently doing:
// file a
.block {
...
}
-
// file b
.block__elelemnt {
...
}
(manually adding the block part to the name)
Is there any way to reference this in a smarter way?
Thanks in advance
You can have this file structure:
block-1/
--block-1.scss
--element-1.scss
--element-2.scss
block-2/
--block-1.scss
--element-1.scss
--element-2.scss
And import elements files info block files.
block.scss:
.block {
color: red;
#import "element-1.scss";
#import "element-2.scss";
}
element-1.scss:
&__element-1 {
color: green;
}
Compiles to:
.block {
color: red;
&__element-1 {
color: green;
}
}
This is perhaps the best you can do.
$namespace: "block";
.#{$namespace}-myClass {
...
}
OUTPUT
.block-myClass {
...
}
You can keep a variable $namespace at the top of your file or in a different file and import it. The advantage of using a variable is you can update it once and all your references will be updated.
SASS is all about DRY.
As in, if you want to modify anything, you should be able to modify it from one single place. If you need anything available across multiple files, consider defining its value in a _vars file and including it everywhere you need it. Also note this has nothing to do with code shortness, but with code maintainability and flexibility.
In fact, even if you do get to write more code (which, in practice, doesn't happen), the advantage of DRY far outweighs it.
Here's how it should be done:
/* _vars.scss: */
$block:block;
/* a.scss: */
#import _vars;
.#{$block} {
...
}
/* b.scss: */
#import _vars;
.#{$block}__element {
...
}
Now, whenever you need to change block value, you can do it from one place: _vars.scss.
But, in practice, most people use the initial technique (nesting):
.block {
...
&__element {
...
}
}
Chances are .block and .block__element are related and, overall, it makes more sense to put them in same file. As your app grows in complexity, you'll find it harder to keep track of your code if you over-complicate it.
I'm using Bourbon's Neat library for my grid system.
I have some code like this:
section {
#include outer-container;
aside { #include span-columns(3); }
article { #include span-columns(9); }
}
I want to increase the width of the aside tag by, let's say, 50px on hover. However,this will cause the article to be pushed down to the next line.
Is there a way to scale the width of one column and proportionally resize the other column?
I know this can be done with javascript but I was wondering if there is a way to do this with the Neat grid-system .
Thanks!
EDIT
Here is the solution that worked for me:
section {
#include outer-container;
aside {
#include span-columns(3);
&:hover {
#include span-columns(2);
& + article {
#include span-columns(11);
}
}
}
article { #include span-columns(9); }
}
I'm using the css sibling selector + to select the article element when the aside is being hovered over.
There’s no built-in functionality for this, but have you tried overriding width on :hover? That is to say, add x length to the width of Column A and take the same amount away from Column B. CSS calc() could help here.
Neat’s docs give insight into the exact function of span-columns and its output: http://thoughtbot.github.io/neat-docs/latest/#span-columns
That being said, this sounds like a great use case for flexbox, if your needs allow for that.
I have a very wierd question, I dont know wether if its possible in css or not
Suppose I have say 3 different css classes as shown below, as you can see I have a common property of all these classes, I want to declare this color somewhere else and pass a reference to it here, so if next time I want to change the color I can simply change at one place rather than changing in all the 5 classes.
I know that you can use body{}, or a wrapper for this but that would affect the colors of the entire site right ? Is there a way to do this ?
Is this even possible ?
.abc {
color:red;
}
.abc2 {
color:red;
}
.abc3 {
color:red;
}
.abc4 {
color:red;
}
.abc5 {
color:red;
}
The bad news: you can't do it in CSS.
The good news: you can write in a meta-CSS language like LESS, which then processes a LESS file to pure CSS. This is called a "mixin".
In LESS:
#errorColor: red;
.error-color {
color: #errorColor;
}
#error-1 {
.error-color;
}
.all-errors {
.error-color;
}
More info: http://lesscss.org/#-mixins
if you want to declare all of them at a time, you can use:
.abc, .abc2, .abc3, .abc4, .abc5 {
color:red;
}
Or you can declare an additional class & add to all the .abc, .abc2.... & make its color:red;.
This can not be done with CSS, but that is still a very popular thing to do by using a CSS preprocessor such as LESS, SASS, SCSS, or Stylus.
A preprocessor will let you define a variable (say $red = #F00). It will replace the variable in your CSS document with the variable value for you, allowing you to write very DRY and module CSS.
This functionality is referred to as "CSS variables", which is part of the future spec, but not yet implemented on any browsers.
For now, the best way to do this in pure CSS is to declare an additional class for the desired "global", and then add that class to all relevant items.
.abc_global { color: red; }
.abc1 { /* additional styling */ }
.abc2 { /* additional styling */ }
<div class="abc1 abc_global"></div>
<div class="abc2 abc_global"></div>
With LESS
You are able to define that red color once:
.myRedColor {
color:red;
}
Now you can call that red on any CSS styles. Even NESTED styles! It's a wicked tool!
.abc1 {
.myRedColor;
}
.abc2 {
.myRedColor;
}
.abc3 {
.myRedColor;
}
.abc4 {
.myRedColor;
}
NESTED EXAMPLE:
.abc {
.itsEasyAsOneTwoThree{
.myRedColor;
}
}
Now all of our "itsEasyAsOneTwoThree" classes that are properly nested inside of an "abc" class will be assigned the red style. No more remembering those long #867530 color codes :) How cool is that?!
You can also use PostCSS with the plugin postcss-preset-env and support custom properties/variables, then use the :root selector to add global css variables.
:root {
--color-gray: #333333;
--color-white: #ffffff;
--color-black: #000000;
}
Is there any way to bypass LESS scoping? It's becoming annoying. Basically, I have a .text-box which defines background, border, etc. Then, in a sub-section there's a one-off change to add a margin-top: .text-box { margin-top: 10px }. Now I can't use .text-box within that section and get my original box styles; instead, all I get is the margin-top. How can I get the definition higher in the heirarchy? I suppose I could make it a function, and call that function in both places, but being that I'm using LESS, I want to do less and KISS. In PHP, you'd get to the global namespace by using / prefix, or in C++ using :: prefix.
Additionally, it doesn't seem like any definitions with the node name work for prototyping. Meaning, I can't declare it ul.products, and then use ul.categories { ul.products }. I have to omit the node name in order to re-use it. Meaning: .categories { .products }. Is this an oversight/impossibility?
Thanks
ok so let's say you've got your mixin defined, for example:
.text-box {
background: #eee;
border: 1px solid #ccc;
color: #333;
margin-top: 5px;
}
now you want to add property or modify it in some subsection, then simply do this:
div.content {
div.sub_section {
.text-box;
margin-top: 10px; // this will override 5px defined in the mixin.
}
}
...which is putting your mixin in place, and adding some property you need to add (which will override any property from the mixin itself BUT make sure the overriding property is defined AFTER the mixin is called.
it's not ideal solution, as it creates two declarations in the output css file (there will be one from mixin followed by the one you defined in .sub_section), but otherwise I don't know a solution to this problem other than defining a parametric mixin..
--
your second issue - I think that less doesn't support scope-limited definitions on purpose... if you really need to know that certain mixin is to be used by a specific tag, I would deal with it like so:
.ul_products { ... }
.ul_categories { .ul_products; ... }
ul.categories { .ul_categories; }
you can also define a bundle and call stuff from there:
#ul {
.products { ... }
.categories { ... }
}
ul.categories { #ul > categories; }
i hope i got it right.. ?
Is it possible to add additional rules to a css block when using a "{ (properties of x) }" selector?
I looked at references but I can't find anything related to "properties of x". A link would be wonderful. I tried the following two combinations, but neither worked:
.dock li { (properties of grid_2; display:inline; background-color:#666; ) }
.dock li { display:inline; background-color:#666; (properties of grid_2) }
Many thanks!
EDIT
Apparently I misread an article and thought that such a syntax existed. I thought one could create a class and let it inherit the properties of another using such syntax, which is evidently not the case.
CSS does not have such a feature.
What you are describing is not possible. I think there are two other possibilities you could maybe use. The first is, that you need to know that several styles can be applied to an element at the same time. I'll give you an example:
li { font-size: 10pt; }
.dock li { color: #ff0000; }
All list items will be formatted with a font size of 10 points and only those within an element containing the dock class will be red.
My second suggestion is that you try applying two or more classes to your HTML element, for instance:
.grid li { font-size: 10pt; }
.dock li { color: #ff0000; }
Now put the grid and dock class into your HTML, and the elements will apply both style definitions:
<ul class="grid dock"> ...
Whatever you consider best for your project: remember that the properties defined in the second style overwrite the properties of the first one (if they do not define the same properties at all, there will be no confusion).
maybe your question is not too strange..
What I understand is that you want to do something like:
.a { prop1: val; prop2: val; }
.b { prop3: val; prop4: val; }
.c { .a; .b; prop5: val; prop6: val; }
You want the class .c to inherit all the properties and values of .a and .b
If this is ok, you can do that using LESS.
To use your LESS code in your sites you have different ways to do it.
First of all check the original site: LESS.org
If you are on Mac check this site: LESS APP + PLUGINS
If you are on PC the less.js plugin should be easier to implement LESS in your sites: less.js usage
Hope it helps.
Happy coding y'all! :)