Edit the markdown source for 'features-overview' As an extension to CSS, Less is not only backwards compatible with CSS, but the extra features it adds use existing. This page is a quick reference for the 'standard' mathematical symbols in HTML that should work on most browsers, and is intended mainly for people editing. Inserting images with CSS. This article assumes that you know at least basic HTML; you know what a tag is and how to use simple tags like the <img> or the <p> tag. Quick Reminder About File Paths. Whenever I have a problem with an image . If that file path is relative (meaning that it doesn't start with http: //), I pay extra close attention to the relationship of where the file is that is referencing the image, and where that image actually is. Is the image in the same directory as the file referencing it? Is the image in a directory below? In Excel, I will use formulas quite frequently for my analysis. At times I want to reference the resulting value of the formula for a comparison or to feed another. I’m struggling with static fbml at the moment–maybe you can help? I’ve been able to display images & links just fine, but I have a little html/css page I’d. If you have your CSS in an external file, then it's often convenient to display an image that's used frequently across the site (such as a header image) as a. 1 Introducing Thymeleaf 1.1 What is Thymeleaf? Thymeleaf is a Java library. It is an XML/XHTML/HTML5 template engine able to apply a set of transformations to. This guide covers the asset pipeline. After reading this guide, you will know: What the asset pipeline is and what it does. Tag/Attribute(s) Description Vers.--Most TAGs--The following attributes may be used with most (X)HTML tags : CLASS: For identifying a set of tags in order to apply styles. Take a look at the included index.html file for a preview of all icons included in the set. You are free to use the icons in the way that makes most sense to. Is the image in a directory above? By . Relative file paths give us a way to travel in both directions. Take a look at my primitive example: Here is all you need to know about relative file paths: Starting with. It allows you to use variables, nested rules, mixins, inline imports, and more, all with a fully CSS- compatible syntax. Sass helps keep large stylesheets well- organized, and get small stylesheets up and running quickly, particularly with the help of the Compass style library. Features. Fully CSS- compatible. Language extensions such as variables, nesting, and mixins. Many useful functions for manipulating colors and other values. Advanced features like control directives for libraries. Well- formatted, customizable output. Syntax. There are two syntaxes available for Sass. The first, known as SCSS (Sassy CSS) and used throughout this reference, is an extension of the syntax of CSS. This means that every valid CSS stylesheet is a valid SCSS file with the same meaning. In addition, SCSS understands most CSS hacks and vendor- specific syntax, such as IE’s old filter syntax. This syntax is enhanced with the Sass features described below. Files using this syntax have the . The second and older syntax, known as the indented syntax (or sometimes just “Sass”), provides a more concise way of writing CSS. It uses indentation rather than brackets to indicate nesting of selectors, and newlines rather than semicolons to separate properties. Some people find this to be easier to read and quicker to write than SCSS. The indented syntax has all the same features, although some of them have slightly different syntax; this is described in the indented syntax reference. Files using this syntax have the . Either syntax can import files written in the other. Files can be automatically converted from one syntax to the other using the sass- convert command line tool: # Convert Sass to SCSS. Convert SCSS to Sass. Note that this command does not generate CSS files. For that, use the sass command described elsewhere. Using Sass. Sass can be used in three ways: as a command- line tool, as a standalone Ruby module, and as a plugin for any Rack- enabled framework, including Ruby on Rails and Merb. The first step for all of these is to install the Sass gem: gem install sass. If you’re using Windows, you may need to install Ruby first. To run Sass from the command line, just usesass input. You can also tell Sass to watch the file and update the CSS every time the Sass file changes: sass - -watch input. If you have a directory with many Sass files, you can also tell Sass to watch the entire directory: sass - -watch app/sass: public/stylesheets. Use sass - -help for full documentation. Using Sass in Ruby code is very simple. After installing the Sass gem, you can use it by running require . They don’t contain dynamic content, so the CSS only needs to be generated when the Sass file has been updated. By default, . sass and . Then, whenever necessary, they’re compiled into corresponding CSS files in public/stylesheets. For instance, public/stylesheets/sass/main. Caching. By default, Sass caches compiled templates and partials. This dramatically speeds up re- compilation of large collections of Sass files, and works best if the Sass templates are split up into separate files that are all @imported into one large file. Without a framework, Sass puts the cached templates in the . In Rails and Merb, they go in tmp/sass- cache. The directory can be customized with the : cache. If you don’t want Sass to use caching at all, set the : cache option to false. Options. Options can be set by setting the Sass: :Plugin#options hash in environment. Rails or config. ru in Rack. All relevant options are also available via flags to the sass and scss command- line executables. Available options are: :style. Sets the style of the CSS output. See Output Style.: syntax. The syntax of the input file, : sass for the indented syntax and : scss for the CSS- extension syntax. This is only useful when you’re constructing Sass: :Engine instances yourself; it’s automatically set properly when using Sass: :Plugin. Defaults to : sass.: property. If the correct syntax isn’t used, an error is thrown. For example: color: #0f. For example: : color #0f. By default, either syntax is valid. This has no effect on SCSS documents.: cache. Whether parsed Sass files should be cached, allowing greater speed. Defaults to true.: read. Defaults to a Sass: :Cache. Stores: :Filesystem that is initialized using the : cache. Setting this to true may give small performance gains. It always defaults to false. Only has meaning within Rack, Ruby on Rails, or Merb.: always. Only has meaning within Rack, Ruby on Rails, or Merb.: always. If a Sass template has been updated, it will be recompiled and will overwrite the corresponding CSS file. Defaults to false in production mode, true otherwise. Only has meaning within Rack, Ruby on Rails, or Merb.: poll. When true, always use the polling backend for Sass: :Plugin: :Compiler#watch rather than the native filesystem backend.: full. If set to true, the error will be displayed along with a line number and source snippet both as a comment in the CSS file and at the top of the page (in supported browsers). Otherwise, an exception will be raised in the Ruby code. Defaults to false in production mode, true otherwise.: template. May also be given a list of 2- element lists, instead of a hash. Only has meaning within Rack, Ruby on Rails, or Merb. Note that if multiple template locations are specified, all of them are placed in the import path, allowing you to import between them. Note that due to the many possible formats it can take, this option should only be set directly, not accessed or modified. Use the Sass: :Plugin#template. This option is ignored when : template. Only has meaning within Rack, Ruby on Rails, or Merb.: cache. Only has meaning on Windows, and only when Sass is writing the files (in Rack, Rails, or Merb, when using Sass: :Plugin directly, or when using the command- line executable).: filename. The filename of the file being rendered. This is used solely for reporting errors, and is automatically set when using Rack, Rails, or Merb.: line. The number of the first line of the Sass template. Used for reporting line numbers for errors. This is useful to set if the Sass template is embedded in a Ruby file.: load. These may be strings, Pathname objects, or subclasses of Sass: :Importers: :Base. This defaults to the working directory and, in Rack, Rails, or Merb, whatever : template. The load path is also informed by Sass. This should import files from the filesystem. It should be a Class object inheriting from Sass: :Importers: :Base with a constructor that takes a single string argument (the load path). Defaults to Sass: :Importers: :Filesystem.: sourcemap. Controls how sourcemaps are generated. These sourcemaps tell the browser how to find the Sass styles that caused each CSS style to be generated. This has three valid values: : auto uses relative URIs where possible, assuming that that the source stylesheets will be made available on whatever server you’re using, and that their relative location will be the same as it is on the local filesystem. If a relative URI is unavailable, a “file: ” URI is used instead. Finally, : none causes no sourcemaps to be generated at all.: line. Useful for debugging, especially when using imports and mixins. This option may also be called : line. Automatically disabled when using the : compressed output style or the : debug. This can be helpful for in- browser debugging of stylesheet imports and mixin includes. This option supersedes the : line. Automatically disabled when using the : compressed output style.: debug. Useful in conjunction with the Fire. Sass Firebug extension for displaying the Sass filename and line number. Automatically disabled when using the : compressed output style.: custom. An option that’s available for individual applications to set to make data available to custom Sass functions.: quiet. When set to true, causes warnings to be disabled. Syntax Selection. The Sass command- line tool will use the file extension to determine which syntax you are using, but there’s not always a filename.
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