- We wrap the `<input>` in a `<label>` so the custom control properly triggers the file browser.
- We hide the default file `<input>` via `opacity`.
-- We use `:after` to generate a custom background and directive (*Choose file...*).
-- We use `:before` to generate and position the *Browse* button.
+- We use `::after` to generate a custom background and directive (*Choose file...*).
+- We use `::before` to generate and position the *Browse* button.
- We declare a `height` on the `<input>` for proper spacing for surrounding content.
In other words, it's an entirely custom element, all generated via CSS.
The `<html>` and `<body>` elements are updated to provide better page-wide defaults. More specifically:
-- The `box-sizing` is globally set on every element—including `*:before` and `*:after`, to `border-box`. This ensures that the declared width of element is never exceeded due to padding or border.
+- The `box-sizing` is globally set on every element—including `*::before` and `*::after`, to `border-box`. This ensures that the declared width of element is never exceeded due to padding or border.
- No base `font-size` is declared on the `<html>`, but `16px` is assumed (the browser default). `font-size: 1rem` is applied on the `<body>` for easy responsive type-scaling via media queries while respecting user preferences and ensuring a more accessible approach.
- The `<body>` also sets a global `font-family`, `line-height`, and `text-align`. This is inherited later by some form elements to prevent font inconsistencies.
- For safety, the `<body>` has a declared `background-color`, defaulting to `#fff`.
.nav-link.active {
color: #fff;
}
-.nav-link.active:after {
+.nav-link.active::after {
position: absolute;
bottom: 0;
left: 50%;
}
{% endhighlight %}
-With the above snippet, nested elements—including generated content via `:before` and `:after`—will all inherit the specified `box-sizing` for that `.selector-for-some-widget`.
+With the above snippet, nested elements—including generated content via `::before` and `::after`—will all inherit the specified `box-sizing` for that `.selector-for-some-widget`.
Learn more about [box model and sizing at CSS Tricks](https://css-tricks.com/box-sizing/).
projects / thirdparty / bootstrap.git / commitdiff
