This document discusses variables, mixins, and nested rules in LESS. Variables allow values like colors and strings to be declared and reused. Mixins allow properties from one ruleset to be included in another for reuse. Nested rules in LESS use the & combinator to concatenate selectors, allowing nesting of CSS rules for improved organization.
Less is an open source dynamic style sheet language designed by Alexis Sellier that allows for variables, nesting, mixins, operators and functions to be used in CSS. It is implemented by adding Less code to a file with a .less extension, including the less.js file, and linking to the .less file. While it provides more powerful features than pure CSS, it also is not a formal standard and could increase complexity if not used carefully.
This document introduces LESS, a dynamic stylesheet language that extends CSS by adding features such as variables, nested rules, mixins, functions, and operations. LESS compiles to regular CSS, allowing it to be widely supported. Key features covered include variables, nesting, mixins, functions, and guard expressions to add logic. Advantages of LESS are listed as increased organization, readability, and decreased code through its features. The document also provides information on using LESS both client-side and server-side, as well as references for further reading.
Less is a CSS preprocessor that allows for variables, operations, mixins and nested rules to make CSS more maintainable, reusable and extendable. Dotless is a .NET port of Less that compiles Less files to regular CSS files through an HTTP handler or console compiler. It aims to bring all the benefits of Less to .NET projects in a native way.
This document discusses variables, mixins, and nested rules in LESS. Variables allow values like colors and strings to be declared and reused. Mixins allow properties from one ruleset to be included in another for reuse. Nested rules in LESS use the & combinator to concatenate selectors, allowing nesting of CSS rules for improved organization.
Less is an open source dynamic style sheet language designed by Alexis Sellier that allows for variables, nesting, mixins, operators and functions to be used in CSS. It is implemented by adding Less code to a file with a .less extension, including the less.js file, and linking to the .less file. While it provides more powerful features than pure CSS, it also is not a formal standard and could increase complexity if not used carefully.
This document introduces LESS, a dynamic stylesheet language that extends CSS by adding features such as variables, nested rules, mixins, functions, and operations. LESS compiles to regular CSS, allowing it to be widely supported. Key features covered include variables, nesting, mixins, functions, and guard expressions to add logic. Advantages of LESS are listed as increased organization, readability, and decreased code through its features. The document also provides information on using LESS both client-side and server-side, as well as references for further reading.
Less is a CSS preprocessor that allows for variables, operations, mixins and nested rules to make CSS more maintainable, reusable and extendable. Dotless is a .NET port of Less that compiles Less files to regular CSS files through an HTTP handler or console compiler. It aims to bring all the benefits of Less to .NET projects in a native way.
This document discusses Less CSS, a dynamic stylesheet language that allows real-time compilation in the browser. It provides benefits like enhancing cross-browser compatibility, improving loading times, and saving time for developers and clients. Less CSS supports many CSS and CSS3 properties and features like pseudo-classes, pseudo-elements, and selectors. The document outlines how to setup Less CSS for client-side usage and describes various Less CSS features like variables, mixins, nested rules, and functions. It concludes with information for contacting the author.
- Less is a dynamic stylesheet language that allows for nesting, variables, mixins and other features not available in regular CSS. It can be compiled to CSS either on the client-side or server-side.
- Some key features of Less include variables, mixins, nesting rules to mimic DOM structure, string interpolation, importing other files, and loops. These allow for reducing repetition, increasing organization and making CSS more dynamic and readable.
- Less is similar in syntax to CSS but with additional features. It can be compiled to plain CSS for browser compatibility. While Less and Sass are both preprocessors, Less uses JavaScript and can run client-side while Sass uses Ruby and runs server-side.
LESS CSS is a dynamic stylesheet language that extends CSS by adding features like variables, mixins, operations, and functions. It allows CSS stylesheets to be more modular and reusable by adding parametric mixins, nesting rules, and importing files. Key features include using variables to store colors and values, defining mixins to group repeated CSS declarations, performing mathematical operations on values, and modifying colors with functions. LESS files are compiled into regular CSS files for browsers to use.
2014 WordPress NYC Meetup: Better WordPress Style - Using SASS and LESS CSS I...Gabriela Levit
CSS controls the look and formatting of your website, allowing you to give your site a unique look. CSS Preprocessors expand this functionality, making it easier to reuse and manage your CSS code.
Both LESS and SASS follow the DRY (Don’t Repeat Yourself) principle and support reusable variables, nested selectors, and functions. Define your style only once; apply to your selectors as needed. Save time and write better, cleaner CSS.
Slides from a hands-on presentation on how to create a WordPress theme style sheet with SASS and LESS CSS. As well, creating a SASS & LESS CSS style library to reuse on future projects.
LESS is a dynamic stylesheet language that extends CSS syntax. The LESS compiler converts LESS code into regular CSS. LESS adds features like variables, mixins, nested rules, and functions that allow things like setting variables to reuse colors and values, embedding selectors to reduce code, nesting rules to organize selectors, and performing operations to generate CSS properties mathematically.
CSS met Less :: Hoe begin ik? - een presentatie gegeven door Hans Kuijpers tijdens Joomladagen 2013 te Woudschoten, Zeist. #jd13nl
De eerste keer werken met CSS gaf me dezelfde kriebels als nu werken met LESS. Het maakt je leven zo veel makkelijker!
An overview of the CSS preprocessor LESS.
Including code samples for creating mixins, variables, math, colors, patterns, guards, scope, and namespaces.
LESS is a dynamic stylesheet language that compiles to CSS. It allows for variables, mixins, functions and other features that help make CSS more maintainable, reusable, and readable. Some key benefits of LESS include reducing duplication, allowing calculations and nesting within CSS, and making CSS code more modular and structured overall.
LESS is a CSS pre-processor that extends CSS by adding features like variables, mixins, functions and nested rules. This allows CSS to be more maintainable, themeable and extendable. The document outlines key LESS features like variables, operations, functions, mixins, loops and compiling LESS to CSS. It provides examples of how each feature can be used.
Google Calendar is a free, web-based time management application that allows users to share and sync schedules across devices. It requires a Google Account and runs on any operating system with a compatible browser. Changes are instantly visible to all users, and information is only shared with others if the user chooses to do so. However, it has been criticized for incorrectly handling time zones in some views.
Using LESS, the CSS Preprocessor: J and Beyond 2013Andrea Tarr
With the introduction of Bootstrap to Joomla 3.x, LESS has been introduced to the Joomla world. LESS presents the opportunity to make writing CSS, especially the new CSS3, easier. This session how LESS works, what you need to use it, how to write it, and how to incorporate it into your workflow.LESS
As CSS3 adds support for rich styling in standards-based web applications, style sheet markup can quickly get out of control! Many CSS effects today require repetitive rules to cover the proprietary browser CSS prefixes. LESS for CSS is an open source framework that makes modern CSS more manageable. With support for variables, mix-ins, nested CSS rules, and operations, LESS finally makes complex CSS easy to maintain. In this session, you will discover how LESS can be easily adopted in any ASP.NET project and learn about tools that make it easy to work with LESS in Visual Studio 2010.
LESS is a dynamic stylesheet language. It extends CSS with dynamic behavior such as variables, mixins, operations and functions. Imagine being able to define a color one time and then use it in multiple places. To be able to say, "Take that background color and have it darken by 20% when I hover over it." Imagine being able to use rounded corners without needing to remember and write the styles for all the different browsers, to be able to create gradients in CSS by just telling it the colors you want to use.
This session will introduce you to LESS, show you how to use it, and walk you through how to set up the software to use it. Since this is an extension of CSS, you should know some CSS. The examples will be taken from Bootstrap and Joomla JUI so having basic knowledge of that is helpful.
The document provides an overview of HTML5, CSS3, and LESS CSS. It describes new HTML5 elements like <canvas>, <audio>, <video>, and attributes for existing tags. CSS3 features covered include rounded corners, animations, and media queries. LESS CSS allows snippets to be reused through mixins and nested rules. The document recommends tools like Modernizr, polyfills, and Crunch to compile LESS into CSS.
The document discusses CSS preprocessors like LESS, SASS, and Stylus. It notes that CSS can be verbose and require repeating code. Preprocessors allow for variables, mixins, nesting, and other features to make CSS more concise and reusable. They require compiling stylesheets from a new syntax to normal CSS. LESS uses a CSS-like syntax and runs on JavaScript for flexibility. SASS has both CSS-like and new syntax options. Stylus has a new syntax but also a Textmate bundle. Preprocessors can make CSS more enjoyable and powerful to work with.
CSS ساختار بسیار سادهای دارد و همین سادگی باعث شده است که تعریف ساختار منطقی و منظم برای آن سخت باشد. در پروژه های بزرگ اغلب طراحان واسط کاربری برای یک دست کردن کد خود و همکاری تیمی با مشکل مواجه میشدند. در همین زمان افرادی سعی کردند با تعریف کردن ساختاری برای CSS شرایط را برای تعریف ساختار در آن تعریف کنند ولی این کافی نبود. سپس برنامه نویسان توانستند با ارائه بستههای نرم افزاری همچون LESS و Sass برخی از کاستیهای CSS را برطرف کنند. اکنون PostCSS به عنوان ابزاری جدید بعد از LESS و Sass آمده است که امکانات بسیار بیشتری را در اختیار طراحان اینترفیس قرار دهد تا آنها بتوانند ساختار منظم تری برای پروژههای کوچک و بزرگ خود تعریف کنند.
LESS vs. SASS - CSS Precompiler ShowdownKevin Powell
In this presentation I'll show you why you should precompile, what LESS and SASS are, how they fit into your workflow, and which one I believe to be better based on a case study using both precompilers.
Este documento proporciona instrucciones sobre cómo usar Google Calendar. Explica que los usuarios pueden crear y configurar múltiples calendarios independientes y añadir eventos a cada uno. También describe cómo compartir calendarios, buscar eventos, y personalizar las notificaciones y visualización. El objetivo es ayudar a los usuarios a organizar su tiempo de manera efectiva y trabajar en equipo utilizando las funciones colaborativas de Calendar.
This document discusses Less CSS, a dynamic stylesheet language that allows real-time compilation in the browser. It provides benefits like enhancing cross-browser compatibility, improving loading times, and saving time for developers and clients. Less CSS supports many CSS and CSS3 properties and features like pseudo-classes, pseudo-elements, and selectors. The document outlines how to setup Less CSS for client-side usage and describes various Less CSS features like variables, mixins, nested rules, and functions. It concludes with information for contacting the author.
- Less is a dynamic stylesheet language that allows for nesting, variables, mixins and other features not available in regular CSS. It can be compiled to CSS either on the client-side or server-side.
- Some key features of Less include variables, mixins, nesting rules to mimic DOM structure, string interpolation, importing other files, and loops. These allow for reducing repetition, increasing organization and making CSS more dynamic and readable.
- Less is similar in syntax to CSS but with additional features. It can be compiled to plain CSS for browser compatibility. While Less and Sass are both preprocessors, Less uses JavaScript and can run client-side while Sass uses Ruby and runs server-side.
LESS CSS is a dynamic stylesheet language that extends CSS by adding features like variables, mixins, operations, and functions. It allows CSS stylesheets to be more modular and reusable by adding parametric mixins, nesting rules, and importing files. Key features include using variables to store colors and values, defining mixins to group repeated CSS declarations, performing mathematical operations on values, and modifying colors with functions. LESS files are compiled into regular CSS files for browsers to use.
2014 WordPress NYC Meetup: Better WordPress Style - Using SASS and LESS CSS I...Gabriela Levit
CSS controls the look and formatting of your website, allowing you to give your site a unique look. CSS Preprocessors expand this functionality, making it easier to reuse and manage your CSS code.
Both LESS and SASS follow the DRY (Don’t Repeat Yourself) principle and support reusable variables, nested selectors, and functions. Define your style only once; apply to your selectors as needed. Save time and write better, cleaner CSS.
Slides from a hands-on presentation on how to create a WordPress theme style sheet with SASS and LESS CSS. As well, creating a SASS & LESS CSS style library to reuse on future projects.
LESS is a dynamic stylesheet language that extends CSS syntax. The LESS compiler converts LESS code into regular CSS. LESS adds features like variables, mixins, nested rules, and functions that allow things like setting variables to reuse colors and values, embedding selectors to reduce code, nesting rules to organize selectors, and performing operations to generate CSS properties mathematically.
CSS met Less :: Hoe begin ik? - een presentatie gegeven door Hans Kuijpers tijdens Joomladagen 2013 te Woudschoten, Zeist. #jd13nl
De eerste keer werken met CSS gaf me dezelfde kriebels als nu werken met LESS. Het maakt je leven zo veel makkelijker!
An overview of the CSS preprocessor LESS.
Including code samples for creating mixins, variables, math, colors, patterns, guards, scope, and namespaces.
LESS is a dynamic stylesheet language that compiles to CSS. It allows for variables, mixins, functions and other features that help make CSS more maintainable, reusable, and readable. Some key benefits of LESS include reducing duplication, allowing calculations and nesting within CSS, and making CSS code more modular and structured overall.
LESS is a CSS pre-processor that extends CSS by adding features like variables, mixins, functions and nested rules. This allows CSS to be more maintainable, themeable and extendable. The document outlines key LESS features like variables, operations, functions, mixins, loops and compiling LESS to CSS. It provides examples of how each feature can be used.
Google Calendar is a free, web-based time management application that allows users to share and sync schedules across devices. It requires a Google Account and runs on any operating system with a compatible browser. Changes are instantly visible to all users, and information is only shared with others if the user chooses to do so. However, it has been criticized for incorrectly handling time zones in some views.
Using LESS, the CSS Preprocessor: J and Beyond 2013Andrea Tarr
With the introduction of Bootstrap to Joomla 3.x, LESS has been introduced to the Joomla world. LESS presents the opportunity to make writing CSS, especially the new CSS3, easier. This session how LESS works, what you need to use it, how to write it, and how to incorporate it into your workflow.LESS
As CSS3 adds support for rich styling in standards-based web applications, style sheet markup can quickly get out of control! Many CSS effects today require repetitive rules to cover the proprietary browser CSS prefixes. LESS for CSS is an open source framework that makes modern CSS more manageable. With support for variables, mix-ins, nested CSS rules, and operations, LESS finally makes complex CSS easy to maintain. In this session, you will discover how LESS can be easily adopted in any ASP.NET project and learn about tools that make it easy to work with LESS in Visual Studio 2010.
LESS is a dynamic stylesheet language. It extends CSS with dynamic behavior such as variables, mixins, operations and functions. Imagine being able to define a color one time and then use it in multiple places. To be able to say, "Take that background color and have it darken by 20% when I hover over it." Imagine being able to use rounded corners without needing to remember and write the styles for all the different browsers, to be able to create gradients in CSS by just telling it the colors you want to use.
This session will introduce you to LESS, show you how to use it, and walk you through how to set up the software to use it. Since this is an extension of CSS, you should know some CSS. The examples will be taken from Bootstrap and Joomla JUI so having basic knowledge of that is helpful.
The document provides an overview of HTML5, CSS3, and LESS CSS. It describes new HTML5 elements like <canvas>, <audio>, <video>, and attributes for existing tags. CSS3 features covered include rounded corners, animations, and media queries. LESS CSS allows snippets to be reused through mixins and nested rules. The document recommends tools like Modernizr, polyfills, and Crunch to compile LESS into CSS.
The document discusses CSS preprocessors like LESS, SASS, and Stylus. It notes that CSS can be verbose and require repeating code. Preprocessors allow for variables, mixins, nesting, and other features to make CSS more concise and reusable. They require compiling stylesheets from a new syntax to normal CSS. LESS uses a CSS-like syntax and runs on JavaScript for flexibility. SASS has both CSS-like and new syntax options. Stylus has a new syntax but also a Textmate bundle. Preprocessors can make CSS more enjoyable and powerful to work with.
CSS ساختار بسیار سادهای دارد و همین سادگی باعث شده است که تعریف ساختار منطقی و منظم برای آن سخت باشد. در پروژه های بزرگ اغلب طراحان واسط کاربری برای یک دست کردن کد خود و همکاری تیمی با مشکل مواجه میشدند. در همین زمان افرادی سعی کردند با تعریف کردن ساختاری برای CSS شرایط را برای تعریف ساختار در آن تعریف کنند ولی این کافی نبود. سپس برنامه نویسان توانستند با ارائه بستههای نرم افزاری همچون LESS و Sass برخی از کاستیهای CSS را برطرف کنند. اکنون PostCSS به عنوان ابزاری جدید بعد از LESS و Sass آمده است که امکانات بسیار بیشتری را در اختیار طراحان اینترفیس قرار دهد تا آنها بتوانند ساختار منظم تری برای پروژههای کوچک و بزرگ خود تعریف کنند.
LESS vs. SASS - CSS Precompiler ShowdownKevin Powell
In this presentation I'll show you why you should precompile, what LESS and SASS are, how they fit into your workflow, and which one I believe to be better based on a case study using both precompilers.
Este documento proporciona instrucciones sobre cómo usar Google Calendar. Explica que los usuarios pueden crear y configurar múltiples calendarios independientes y añadir eventos a cada uno. También describe cómo compartir calendarios, buscar eventos, y personalizar las notificaciones y visualización. El objetivo es ayudar a los usuarios a organizar su tiempo de manera efectiva y trabajar en equipo utilizando las funciones colaborativas de Calendar.
21. Alternativas
PHP Cáceres
LESS - Import
Import
@import "foo"; // foo.less is imported
@import "foo.less"; // foo.less is imported
@import "foo.php"; // foo.php imported as a less file
@import "foo.css"; // statement left in place, as-is
Opciones
Reference
@import (reference) "foo.less";
Podemos utilizar el contenido vía extends y mixins.
22. Alternativas
PHP Cáceres
LESS - Import
Import
Inline
@import (inline) "foo.less";
Evitamos su procesamiento. (Comentarios en css)
Less
@import (less) "foo.less";
El fichero es tratado como less independientemente de su extensión.
CSS
@import (css) "foo.less";
El fichero es tratado como css independientemente de su extensión.
23. Alternativas
PHP Cáceres
LESS - Import
Import
Once
@import (once) "foo.less";
Funcionamiento por defecto. Las demás inclusiones serán ignoradas sobre ese mismo
fichero.
Multiple
@import (multiple) "foo.less";
Permite la importación varias veces de ficheros con el mismo nombre.
Optional
@import (optional) "foo.less";
Permite la carga si el fichero existe, evita errores de compilación en caso de no existir.
28. Alternativas
LESS - Mixins
Mixins - Espacio de nombres
PHP Cáceres
#gradient {
// Horizontal gradient, from left to right
//
// Creates two color stops, start and end, by specifying a color and position for each color stop.
// Color stops are not available in IE9 and below.
.horizontal(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
background-image: -webkit-linear-gradient(left, @start-color @start-percent, @end-color @end-percent);
background-image: -o-linear-gradient(left, @start-color @start-percent, @end-color @end-percent);
background-image: linear-gradient(to right, @start-color @start-percent, @end-color @end-percent);
background-repeat: repeat-x;
filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d',
GradientType=1)",argb(@start-color),argb(@end-color)));
}
// Vertical gradient, from top to bottom
//
// Creates two color stops, start and end, by specifying a color and position for each color stop.
// Color stops are not available in IE9 and below.
.vertical(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
background-image: -webkit-linear-gradient(top, @start-color @start-percent, @end-color @end-percent);
background-image: -o-linear-gradient(top, @start-color @start-percent, @end-color @end-percent);
background-image: linear-gradient(to bottom, @start-color @start-percent, @end-color @end-percent);
background-repeat: repeat-x;
filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d',
GradientType=0)",argb(@start-color),argb(@end-color)));
}
}
#gradient > .horizontal(@start-color: rgba(0,0,0,.5); @end-color: rgba(0,0,0,.0001));
37. Alternativas
LESS - Extend
Extend
PHP Cáceres
No detecta duplicados.
Interpolación sólo en origen.
Extend vs Mixins
.alert-info,
.widget {
/* declarations */
}
.alert:extend(.alert-info, .widget) {}
// Output
.alert-info,
.widget,
.alert,
.alert {
/* declarations */
}
@variable: .bucket;
@{variable} { // interpolated selector
color: blue;
}
.some-class:extend(.bucket) {} // does nothing, no match is
found
//---------------------------------------------------------
//
.bucket {
color: blue;
}
@{variable}:extend(.bucket) {}
@variable: .selector;
38. Alternativas
LESS - Extend
Extend - Caso de uso
PHP Cáceres
Usar clase base sin tener que añadirla a la etiqueta html
.bear {
background-color: brown;
}
.animal {
background-color: black;
color: white;
}
<a class="animal bear">Bear</a>
<a class="bear">Bear</a>
.animal {
background-color: black;
color: white;
}
.bear {
&:extend(.animal);
background-color: brown;
}
41. Alternativas
LESS - Funciones
Funciones - Ejemplos
PHP Cáceres
@gray-lighter: lighten(@gray-base, 93.5%); // #eee
@brand-primary: darken(#428bca, 6.5%); // #337ab7
Operaciones de color
42. Alternativas
LESS - Bootstrap
Buenas prácticas
PHP Cáceres
Organización de ficheros
Uso de variables
Mixins
Sistema grid parametrizable
Ejemplo de uso de características de LESS