Why can't I customize the styling of web component libraries i.e UI5, beyond themes? I have tried everything from inline styling to wrapping the web components in Styled-components. I tried using :host(), ::slott. I've tried to inject style tags into the template itself. I'm really at a loss, I wasn't able to change one pixel of styling. I'm leaning towards the issue being multiple shadow dom or encapsulated CSS.
<TabContainer backgroundDesign={"red"} ref={ToggleRef} className={`webCompToggleTabBar`} id="UI5TabContainer" tabs-overflow-mode="StartAndEnd" collapsed fixed>
{Object.keys(Tabs).map((subTemplate, i) => {
return (<Tab className="webCompToggleTab" key={Math.random()} additional-text={subTemplate} name={subTemplate} />);
</TabContainer>
Now the outer Tabcontainer is easilystyled with any type of styling, but when I attempt to style any of the tabContainer's inner Tabs...crickets
Just for clarity, I am building a lit-html wrapper around pre-built web-component libraries to work with React and Angular. But I need to be able to restyle the imported web-components
so the issue with styling web components from freely available libraries are:
Web components are usually created using the shadowDOM, this is great for
encapsulation. But when you want to go back in and try to override that
encapsulation and completely overwrite the web components CSS. You will
get stuck in the top layer of the web component, just outside it's shadowDOM(if there using it). With some libraries,
this is done on purpose, others allow you to do this but you may have
to fork over some hefty cash to use those libraries.
Fortunately, there are some things you can do to spice up the web-
components. CSS variables, A lot of libraries build CSS variables into
their components for theming. So one thing you can do is find their list of CSS variables either on their Documents page or in the elements tab in your browser and just cut and paste them
in.
If this is not enough for you there is another option.
You can create your own web components in a way very similar to
creating them in ReactJS. There is a tool called Stencil which
gives you a way to create web component using typescript and CSS.
Stencil solved all my issues, it has all the polyfills built in.
It sets up all your testing and deploying. https://stenciljs.com/
There are a lot of questions here related to Bootstrap. I see a lot of people using it. So I tried to research it, and I found the official Bootstrap site, but there was only a download section and a few words after that. Nothing that explains what is it for... I just understood that it is a front-end helper. I have tried to find something by Googling, but found nothing specific. Everything I found is related to the computer science definition.
So, my questions are:
What is Bootstrap at all?
What is it used for, and how does it help front-end development?
I would also like some more details explaining it.
It is an HTML, CSS, and JavaScript open-source framework (initially created by Twitter) that you can use as a basis for creating web sites or web applications.
More information and links to download
Getting started
Examples
Themes
Bootply - Bootstrap Editor and Builder
Update
The official bootstrap website is updated and includes a clear definition.
"Bootstrap is the most popular HTML, CSS, and JS framework for developing responsive, mobile first projects on the web."
"Designed and built with all the love in the world by #mdo and #fat."
Bootstrap is an open-source Javascript framework developed by the team at Twitter.
It is a combination of HTML, CSS, and Javascript code designed to help build user interface components.
Bootstrap was also programmed to support both HTML5 and CSS3.
Also it is called Front-end-framework.
Bootstrap is a free collection of tools for creating a websites and web applications.
It contains HTML and CSS-based design templates for typography, forms, buttons, navigation and other interface components, as well as optional JavaScript extensions.
Some Reasons for programmers preferred Bootstrap Framework
Easy to get started
Great grid system
Base styling for most HTML
elements(Typography,Code,Tables,Forms,Buttons,Images,Icons)
Extensive list of components
Bundled Javascript plugins
Taken from About Bootstrap Framework
Bootstrap, as I know it, is a well defined CSS. Although using Bootstrap you could also use JavaScript, jQuery etc. But the main difference is that, using Bootstrap you can just call the class name and then you get the output on the HTML form. for eg. coloring of buttons shaping of text, using layouts. For all this you do not have to write a CSS file rather you just have to use the correct class name for shaping your HTML form.
In simpler words, you can understand Bootstrap as a front-end web framework that was created by Twitter for faster creation of device responsive web applications. Bootstrap can also be understood mostly as a collection of CSS classes that are defined in it which can simply be used directly. It makes use of CSS, javascript, jQuery etc. in the background to create the style, effects, and actions for Bootstrap elements.
You might know that we use CSS for styling webpage elements and create classes and assign classes to webpage elements to apply the style to them. Bootstrap here makes the designing simpler since we only have to include Bootstrap files and mention Bootstrap's predefined class names for our webpage elements and they will be styled automatically through Bootstrap. Through this, we get rid of writing our own CSS classes to style webpage elements. Most importantly Bootstrap is designed in such a way that makes your website device responsive and that is the main purpose of it. Other alternates for Bootstrap could be - Foundation, Materialize etc. frameworks.
Bootstrap makes you free from writing lots of CSS code and it also saves your time that you spend on designing the web pages.
Bootstrap is an open-source CSS, JavaScript framework that was originally developed for twitter application by twitter's team of designers and developers. Then they released it for open-source. Being a longtime user of twitter bootstrap I find that its one of the best for designing mobile ready responsive websites. Many CSS and Javascript plugins are available for designing your website in no time. It's kind of rapid template design framework. Some people complain that the bootstrap CSS files are heavy and take time to load but these claims are made by lazy people. You don't have to keep the complete bootstrap.css in your website. You always have the option to remove the styles for components that you do not need for your website. For example, if you are only using basic components like forms and buttons then you can remove other components like accordions etc from the main CSS file. To start dabbling in bootstrap you can download the basic templates and components from getbootstrap site and let the magic happen.
Disclaimer: I have used bootstrap in the past, but I never really appreciated what it actually is before, this description comes from me coming to my own definition, today. And I know that bootstrap v4 is out, but I found the bootstrap v3 documentation to be much clearer, so I used that. The library is not going to fundamentally change what it provides.
Briefly
Bootstrap is a collection of CSS and javascript files that provides some nice-looking default styling for standard html elements, and a few common web content objects that are not standard html elements.
To make an analogy, it's kind of like applying a theme in powerpoint, but for your website: it makes things look pretty nice without too much initial effort.
What does it consist of?
The official v3 documentation breaks it up into three sections:
CSS
Components
Javascript
These roughly correspond to the three main things that Bootstrap provides:
Plain CSS files that style standard html elements. So, Bootstrap makes your standard elements pretty-looking. e.g. html: <input class="btn btn-default" type="button" value="Input">Click me</button>
CSS files that use styling on standard html elements to make them into something that is not a standard html element but is a standard Bootstrap element (e.g. https://getbootstrap.com/docs/3.3/components/#progress). In this way Bootstrap extends the list of "standard" web elements in a visually consistent way. e.g. html: <span class="glyphicon glyphicon-align-left"></span>
The CSS classes are designed with jQuery in mind. Internally, Bootstrap uses jQuery selectors to modify the styles on the fly and interact with the DOM, and thus provides the user the same capability. I believe this requires more explanation, so...
Using Javascript/jQuery
Bootstrap extends jQuery quite a bit. If we look at the source code, we can see that it uses jQuery to do things like: set up listeners for keydown event to interact with dropdowns. It does all of this jQuery setup when you import it in your <script> tag, so you need to make sure jQuery is loaded before Bootstrap is.
Additionally, it ties the javascript to the DOM more tightly than plain jQuery, providing a javascript class interface. e.g. toggle a button programmatically. Remember that CSS just defines how a thing looks, so the major job of these operations will tend to be to modify which CSS classes apply to the element at that moment in time. This kind of change, based on user input, can't be done with plain CSS.
There are other standard interactions with a user that we denizens of the internet are used to that are not covered by CSS. Like, clicking a link that scrolls you down a page instead of changing pages. One of the things that Bootstrap gives you is an easy way to implement this behaviour on your own website.
Standards
I have mentioned the word "standard" a lot here, and for good reason. I think the best thing that Bootstrap provides is a set of good-looking standards. You're free to modify the default theme as much as you want, but it's a better baseline than raw html, css and js. And this is why it's called "framework".
Different web browsers have different default styles and can act differently, and need different CSS prefixes and things like that. A major benefit of Bootstrap is that it is much more reliable than writing all that cross-browser stuff yourself (you will still have problems, I'm sure, but it's easier).
I think that Bootstrap was preferred more when gulp and babel weren't as popular. Looking at Bootstrap it seems to come from a time before everyone compiled their javascript. It's still relevant, but you can get some of the benefits from other sources now.
More recent versions of CSS have allowed you to define transitions between these static lists as they change. The original version of Bootstrap actually predates wide-spread adoption of this capability in browsers, so they still have their own animation classes. There are a few bits of Bootstrap that are like this: that other stuff has come up around it and makes it look a bit redundant.
Bootstrap is an HTML, CSS, JS framework with many components that let you create beautiful and modern web sites or web applications very fast.
The following websites contain examples, elements and reusable components that you can integrate into your project using bootstrap framework
bootsnipp.com
startbootstrap.com
bootdey.com
By today's standards and web terminology, I'd say Bootstrap is actually not a framework, although that's what their website claims. Most developers consider Angular, Vue and React frameworks, while Bootstrap is commonly referred to as a "library".
But, to be exact and correct, Bootstrap is an open-source, mobile-first collection of CSS, JavaScript and HTML design utilities aimed at providing means to develop commonly used web elements considerably faster (and smarter) than having to code them from scratch.
A few core principles which contributed to Bootstrap's success:
it's reusable
it's flexible (i.e: allows custom grid systems, changing responsiveness breakpoints, column gutter sizes or state colors with ease; as a rule of thumb, most settings are controlled by global variables)
it's intuitive
it's modular (both JavaScript and (S)CSS use a modular approach; one can easily find tutorials on making custom Bootstrap builds, to include only the parts they need)
has above average cross-browser compatibility
web accessibility out of the box (screenreader ready)
it's fairly well documented
It contains design templates and functionality for: layout, typography, forms, navigation, menus (including dropdowns), buttons, panels, badges, modals, alerts, tabs, collapsible, accordions, carousels, lists, tables, pagination, media utilities (including embeds, images and image replacement), responsiveness utilities, color-based utilities (primary, secondary, danger, warning, info, light, dark, muted, white), other utilities (position, margin, padding, sizing, spacing, alignment, visibility), scrollspy, affix, tooltips, popovers.
By default it relies on jQuery, but you'll find jQuery free variants powered by each of the modern popular progressive JavaScript frameworks:
React-Bootstrap - React powered Bootstrap
BootstrapVue - Vue powered Bootstrap
ng-bootstrap - Angular powered Bootstrap
Working with Bootstrap relies heavily on applying certain classes (or, depending on JS framework: directives, methods or attributes/props) and on using particular markup structures.
Documentation typically contains generic examples which can be easily copy-pasted and used as starter templates.
Another advantage of developing with Bootstrap is its vibrant community, translated into an abundance of themes, templates and plugins available for it, most of which are open-source (i.e: calendars, date/time-pickers, plugins for tabular content management, as well as libraries/component collections built on top of Bootstrap, such as MDB, portfolio templates, admin templates, etc...)
Last, but not least, Bootstrap has been well maintained over the years, which makes it a solid choice for production-ready applications/websites.
Bootstrap the most popular HTML, CSS, and JS framework for developing responsive, mobile-first projects on the web. It is very popular open-source toolkit.Very easy for styling using it. latest version is bootstrap 4.bootstrap featuring Sass variables and mixins, responsive grid system, extensive prebuilt components, and powerful JavaScript plugins.
In now they specify their toolkit for React Js,Angular & Vue
Bootstrap Home page
Vue Bootstrap
Angular Bootstrap
React Bootstrap
Bootstrap is an open-source, mobile-first collection of CSS, JavaScript and HTML design utilities aimed at providing means to develop commonly used web elements considerably faster (and smarter) than having to code them from scratch.
A few core principles which contributed to Bootstrap's success:
it's reusable
it's flexible (i.e: allows custom grid systems, changing responsiveness breakpoints, column gutter sizes or state colors with ease; as a rule of thumb, most settings are controlled by global variables)
it's intuitive
it's modular (both JavaScript and (S)CSS use a modular approach; one can easily find tutorials on making custom Bootstrap builds, to include only the parts they need)
has above average cross-browser compatibility
web accessibility out of the box (screenreader ready)
it's fairly well documented
Bootstrap is the world’s most popular and widely used open-source framework for developing with HTML, CSS, and JS. It is a front-end framework of HTML. Bootstrap helps in building responsive websites or web applications and a 12-column grid system that helps dynamically adjust the website to a suitable screen resolution. The current version of bootstrap is 4.3.1 and the bootstrap team has also officially announced Bootstrap 5 version and changes like removing jquery from bootstrap. Some of the crucial reasons why the bootstrap framework is most preferable are
It is easy to use
Bootstrap has a big community support
Customizations can be done easily
It increases the development speed
Responsiveness
For more details, you can check the official website: https://getbootstrap.com/
It is advisable to use the Bootstrap 5 Admin Templates while working on your bootstrap-based projects.
Source: https://vmokshagroup.com/blog/bootstrap-advantages/
Bootstrap is Open source HTML Framework. which compatible at almost every Browser. Basically Large Screen Browser width is >992px and extra Large 1200px. so by using Bootstrap defined classes we can adjust screen resolution for displaying contents at every screen from small mobiles to Larger Screen. I tried to explain very short.
for Example :
<div class="col-sm-3">....</div>
<div class="col-sm-9">....</div>