Matches all instances of QPushButton that are direct children of a QDialog.įor styling complex widgets, it is necessary to access subcontrols of the widget, such as the drop-down button of a QComboBox or the up and down arrows of a QSpinBox. Matches all instances of QPushButton that are descendants (children, grandchildren, etc.) of a QDialog. Matches all QPushButton instances whose object name is okButton. Matches instances of QPushButton, but not of its subclasses. One way to achieve this is to unset the style sheet and set it again. Thus, it will only see the width: 400px declaration but will still use that value for the width of the content-area of the element.Warning: If the value of the Qt property changes after the style sheet has been set, it might be necessary to force a style sheet recomputation. Although Opera follows CSS with regard to element sizing, it suffers from some of the same parser flaws as IE5.x for Windows. There is one potential stumbling block, and that's Opera. (The same would be true for height declarations as well, if you want to make them.) Thus, the test div will be sized the same in both old and new browsers despite the differences in element sizing. Properly written browsers, on the other hand, will see the entire rule as you wrote it and will use the declaration width: 350px because it comes later in the rule.
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For example, let's say you want your test div to be 400 pixels wide, as measured from outer-left border edge to outer-right border edge.īrowsers like Explorer 5.5, which takes width to be the distance from border edge to border edge, will think this to be the rule for div#test: Consider the differences in element box sizing, as explained in " Picking a Rendering Mode" (which is available on this Web site) and touched on in Project 9, "Multicolumn Layout." It's possible to write rules that include width values for both old and new browsers so that consistent element sizing becomes a reality. You might be wondering what good this does you. The rest of the rule is split off and effectively ignored. In other words, as far as these flawed browsers are concerned, the div#test rule ends with the first voice-family declaration. However, here's what an older browser with a flawed parser will see: The second rule causes the first to be ignored even by audio browsers. The second voice-family rule is there to clean up after the first, just in case an audio browser reads the styles and a file with that name exists on the users' computer. Of course, no Web browsers are able to speak Web pages, so this rule would have no effect. If such a file existed on the user's computer, an audio browser could use it as the voice with which to read the page. Old is also not understood by IE3/Win and IE4/Win, if that's a concern for you. This is by far the most widely used trick, even though it's only good for hiding external style sheets. It all hinges on the fact that NN4.x doesn't understand what means.
![inherit font combinations inherit font combinations](https://www.natap.org/2014/images/031714/031714-9/APASL1.gif)
If you've ever struggled with Netscape Navigator 4.x, this trick is for you. Best of all, these methods are all perfectly valid CSS and don't require any form of scripting to carry out. Three of these methods are ways to hide entire style sheets from buggy browsers, but one allows authors to hide parts of a single rule. This looks at four ways to hide CSS from certain browsers. But if, like most of us, you have to worry about what your site will look like in every browser out there, one or more of these tricks might be just the thing. If you can get away with ignoring old, flawed browsers, then more power to you! Write to the standards and sleep well at night. It might not seem like much, but we need to take our victories where we can.Īlthough these tricks probably seem like a lot of effort just to cater to browser bugs, they're less trouble than setting up JavaScript sniffers to serve up different style sheets to different browsers, let alone writing the separate style sheets that such an approach would require. Fortunately, there are ways to take advantage of these same browser flaws to make our lives a little easier.
![inherit font combinations inherit font combinations](https://donornexus.com/upload/1945668860.png)
Inherit font combinations code#
Every time an author has to code a workaround to make Navigator 4.x happy, every time a Web page comes up differently in different browsers, an echo of the wars lives on.
Inherit font combinations pdf#
You can also view or download a PDF version of this document (276KB).Īlthough some feel the browser wars are behind us, their sad legacy persists.