Vertical align anything with just 3 lines of CSS
We have card with all CSS centering options. You probably want to head over there and get an overview over what techniques are available for your use case and browser requirements.
See attached link. The gist is:
.element {
position: relative;
top: 50%;
transform: translateY(-50%);
}
Works in all web browsers and IE9+.
Related cards:
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host
simple DNS lookup utility.
>host heise.de
heise.de has addr...
How to view Image Metadata on the Linux Command Line with ImageMagick
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>identify -verbose DSC00136.JPG
Image: DSC00136.JPG
Format: JPEG (Joint Photographic Experts Group JFIF format)
Class: DirectClass
Geometry: 5472x3648+...
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JavaScript without jQuery (presentation from 2019-01-21)
Summary
- We want to move away from jQuery in future projects
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- Un...
CSS: Vertically center with display: table-cell
The classical scenario: There's a parent div element and you want to center some arbitrary child element vertically inside of it. Here's how you do it (also try this jsfiddle).
The children need to be block elements....
Unpoly 3.7.1, 3.7.2 and 3.7.3 released
Version 3.7.0 broke some things in complex forms. Sorry for that. Concurrent user input is hard.
3.7.1
This change fixes two regressions for form field watchers, introduced by [3.7.0](https://unpoly.com...
Customize your Bash prompt
The shell variable PS1 holds your bash prompt. You might want to change it to serve your needs best. Here is how to:
General
- non-printing escape sequences in your prompt have to be inclosed in
\[\e[and\]so your shell can...
Howto properly use vertical-align to align elements vertically
Say you want to vertically align a div box inside a div container. This is how you do it:
HTML
<div id="container">
<div class="box">
<span> Some text...<br />in two lines. </span>
</div>
</div>
CSS
Set the...
IE-friendly mobile-first CSS with Sass 3.2
Building CSS mobile-first is the way forward, because blah blah blah progressive enhancement blah. Problem is, Internet Explorer prior to 9 ignores anything within media query blocks, leaving those browsers with mobile styles.
Not all of us can g...
Be very careful with 301 and 308 redirects
Browsers support different types of redirects.
Be very careful with these status codes:
301 Moved Permanently308 Permanent Redirect
Most browsers s...