This is more of a curiosity question than something I really need to know.
On this page:
http://twitter.github.com/bootstrap/components.html#buttonDropdowns
How is the little caret / down arrow thing constructed? Poking around with Firebug it looks like it's just made with transparent borders but ... I must be missing something.
Bootstrap is very cool. I just got it going with Symfony.
It is only with borders. When you see arrows like this, the developer most likely used pseudo elements to create them. Basically what happens is you create a transparent box without content, and since there is nothing there, all you see is the one corner of the border. This conveniently looks just like an arrow.
How to do it:
.foo:before {
content: ' ';
height: 0;
position: absolute;
width: 0;
border: 10px solid transparent;
border-left-color: #333;
}
http://jsfiddle.net/fGSZx/
Here are some resources to help:
CSS Triangle from CSS-Tricks (this should clear everything up)
Smashing Mag article about :before and :after
Here is the CSS for an upward facing caret, based on the CSS from bootstrap:
.caret-up {
display: inline-block;
width: 0px;
height: 0px;
margin-left: 2px;
vertical-align: middle;
border-top: none;
border-bottom: 4px solid #FFFFFF;
border-right: 4px solid transparent;
border-left: 4px solid transparent;
border-top-width: 0px;
border-top-style: dotted;
content: "";
}
Related
I try to create a handwritten looked underline to input.
With this complex border-radius, Chrome looks great. In Safari, however, these artifacts appear.
I tried to fix it with
-webkit-background-clip: padding-box;
from: https://tumble.sneak.co.nz/post/928998513/fixing-the-background-bleed
input {
border: none;
border-bottom: 2px solid;
border-radius: 130px 50px/4px 2px;
}
https://codepen.io/matzR/pen/dybpXgO
Safari: artefacts over the input
Safari seems to have some interesting decisions as far as figuring out the border color goes. Try zooming at this, for instance:
input {
border: 0.001px solid white;
border-bottom: 2px solid red;
border-radius: 130px 50px/4px 2px;
padding: 10px;
width: 300px;
}
I guess the linked workaround doesn't work because the border isn't inside the element?
But this is OK (codepen):
input {
border: 1px solid transparent;
border-bottom: 2px solid red;
border-radius: 130px 50px/4px 2px;
padding: 10px;
width: 300px;
}
<input>
My other considerations were using a SVG element for background and/or using border-image-slice to simulate the behaviour.
Basically what I'm trying to do is move this caret up and I wouldn't even know where to start, so here's a picture of what I'm trying to move up. (the caret is the little down arrow just in case you didn't know).
Sorry about the title of this question, it's not very clear but I didn't know what else to call it...
Here's the CSS for the caret in bootstrap
.caret {
display: inline-block;
width: 0;
height: 0;
margin-left: 2px;
vertical-align: middle;
border-top: 4px solid;
border-right: 4px solid transparent;
border-left: 4px solid transparent;
}
I changed the the vertical align which is seen in the code. Instead of
vertical-align: middle;
I used
vertical-align: super;
which raised it up to the height of the text.
I have a fixed header on my site that I'm working on. So the content of my page flows under the header and the header stays fixed at the top of the page. I can't use the border-radius function in css to create my rounded corners that I want because the page content background color shows on the outside of my rounded corners. So I have implemented two rounded corner images, one for the left and one for the right. My problem is, the images move a total of 1px when I zoom. No matter how much I zoom, it only moves a total of 1px and for the life of me, I can't seem to figure out the problem. I'm going to post a link to my site and maybe somebody can go through the html and css and try to figure this out. I also put a link to download my VB project to look at in Visual Studio. Any help would be appreciated thanks a lot.
Link to Webpage
http://aspspider.info/speeddemon8406/Default.aspx
Link to download VB project
http://www1.datafilehost.com/d/46288e83
#header {
background-color: #ddd;
height: 125px;
left: 50%;
margin-left: -480px;
position: fixed;
width: 960px;
}
#header-top {
background-color: #fff;
border-left: 1px solid #aaa;
border-radius: 25px 25px 0 0;
border-right: 1px solid #aaa;
border-top: 1px solid #aaa;
height: 85px;
width: 958px;
}
#nav-wrapper {
background-color: #fff;
border-left: 1px solid #aaa;
border-right: 1px solid #aaa;
width: 958px;
}
#nav {
background-color: Orange;
border-radius: 15px 15px 0 0;
height: 40px;
margin: 0 1px;
width: 956px;
}
#topleftcorner,#toprightcorner,#nav-corner-left,#nav-corner-right{display:none;}
The basic idea is that I put a #ddd color on #header (the page background color). I then use border-radius on #header-top to round the corners. I also apply a white background to #nav-wrapper. Then I just fix up the borders, and remove the unnecessary images.
As for your 1px off problem, it's a rounding error. I removed left:0;right:0 from #header and replaced it with left:50%;margin-left: -480px so that it doesn't happen.
Is it possible to create a border like the flowing image with css? Any hints will be appreciated
#sidebar h4, #sidebar-alt h4 {
background:url('images/widget-title-bg.png');
color: #333333;
font-size: 22px;
font-family: Arial, sans-serif;
font-weight: normal;
margin: 0 0 10px 0;
padding: 7px 0px 11px 0px;
}
EDIT: Made some changes according to your comments. Try:
<h1 id="progress">
<i></i>Recent Posts
</h1>
#progress {
display: block;
max-width: 200px;
min-width: 150px;
position: relative;
margin: 50px auto 0;
padding: 0 3px;
border-bottom: 10px solid #ECECEC;
font: bold 26px 'Dancing Script', cursive;
}
#progress i {
display: block;
position: absolute;
width: .8em;
height: 10px;
left: 0;
bottom: -10px;
background-color: #4287F4;
}
http://jsfiddle.net/userdude/z45QJ/4/
I'm not a big fan of the position manipulation, but all browsers should support and display this nearly identically, the only possible problem being the font's displa may be slightly differently in different browsers. However, IE7-9 should interpret everything else just fine.
Too bad the whole wuuurld isn't on WebKit:
<div id="progress"></div>
#progress {
width: 300px;
height: 10px;
border: none;
background-color: #ECECEC;
border-left: solid #4287F4;
box-shadow:inset 2px 0 white;
-webkit-animation: slide 10s linear infinite;
}
#-webkit-keyframes slide {
from {
border-left-width: 0;
width: 300px;
} to {
border-left-width: 300px;
width: 0;
}
}
http://jsfiddle.net/userdude/z45QJ/1
It could be adjusted to go both ways. However, it only works on WebKit browsers (Chrome, Safari [?]). If that's ok, let me know and I'll add the return trip.
There are four ways to do it. I demonstrate four ways in this JSFiddle, and here are some explanations.
If you're not sure, just use Method B.
Method A
Method A has the advantage that it's the most compatible but the disadvantage that it requires extra HTML. Basically, you're giving an outer div the blue border and an inner div the white border. Your HTML will look something like this:
<div class="methodA">
<div class="container">
Method A
</div>
</div>
Your CSS will look like this:
.methodA {
border-left: 10px solid blue;
}
.methodA .container {
height: 100%;
border-left: 10px solid white;
}
Method B
Method B has the advantage that there's no extra HTML, but the disadvantage is that it won't work in IE before version 9.
.methodB {
border-left: 10px solid blue;
-webkit-box-shadow: inset 10px 0 white;
-moz-box-shadow: inset 10px 0 white;
box-shadow: inset 10px 0 white;
}
You can mitigate IE's compatibility issues using CSS3 PIE, which makes box shadows behave in Internet Explorer (along with other CSS3 features).
Methods C and D
This JSFiddle shows two other methods, which I won't describe in as much detail, but...
Method C makes the blue border a shadow. As a result, it can "cover" other elements and it also changes the size of the element. I don't love this solution, but it might work for you. It also suffers the compatibility issues of Method B.
Method D puts two divs inside of the element: one for the blue border and one for the right border.
it is not really complicate and no extra HTML is needed.
h4:after {
display:block;
content: '';
height:4px;
width: 1px;
border:0px solid #ececec;
border-left-width: 10px;
border-left-color:#4287F4;
border-right-width: 90px;
}
http://jsfiddle.net/N27CH/
Check this link Visit
(http://jsfiddle.net/qD4zd/1/).
See if it helps. This tells you about the application of gradient. See how it is done.
Also why not use directly the images that you want as the border.
Check out for "Gradient" in Css. This might answer your question.
I studied some usage of "canvas" tag in HTML5. That is preety much informative about gradient specification and is also more readable than the traditionl HTML4. So for this question i also want to request the questioner to look at the "canvas" tag in HTML5. check the link below.
Link: http://html5center.sourceforge.net/Using-Unprefixed-CSS3-Gradients-in-Modern-Browsers
Link: http://www.sendesignz.com/index.php/web-development/111-how-to-create-gradient-and-shadow-effect-in-html5-canvas
Second link is more awesome. Cheers.:)
I have inherited a legacy app for a rewrite and have run across a curious problem. There is tabular data displayed on the page where the title of the table is within a trapezoidal shape that resembles a manila envelope tab. At the bottom of such tables, there is usually a button row that is the same shape as the table title but rotated 180°. Currently, this effect is being pulled off by using a square image with a white triangle in one half on a transparent background as a background image in the corner of a rectangular block to achieve the look of a trapezoid. However, this technique is prone to flickering when the page is refreshed.
As an exercise, I have tried to see if I can replace this with a pure CSS technique. I found this link to different shapes in CSS and have emulated the trapezoid to look as I need. I am able to place the table title text within a trapezoid correctly. However, when I need the look of the 180° rotated trapezoid, I am unable to get the text to place within the shape. My code is included below and here is a jsFiddle showing what I have accomplished so far. I understand that the text shows below the rotated trapezoid because the height is set to 0 and I'm using border-top to build the shape. Is there anything I can do to get this to work correctly?
Please keep in mind that I need this to display in IE8 (and possibly also IE8 in compatibility mode -- IE7). Also, I'd like to keep additional HTML elements to a minimum because I want to keep this as semantic as possible. I know I can place a span inside the div and absolutely position that span so that it displays the text within the shape, but when I do that I have to manually set a width on the trapezoid and when the width can vary from button row to button row, I'd rather not go down that path.
Thanks.
HTML:
<div class="trap">Title Text</div>
<div class="trap180">Button Row</div>
CSS:
.trap {
color: black;
font: normal bold 13px Arial;
border-bottom: 27px solid #F00;
border-right: 27px solid transparent;
height: 0px;
float: left;
line-height: 27px;
padding: 0 4px;
}
.trap180 {
clear: both;
color: black;
font: normal bold 13px Arial;
border-top: 27px solid #F00;
border-left: 27px solid transparent;
height: 0px;
float: right;
margin: 20px 0 0 0;
line-height: 27px;
padding: 0px 4px 0;
}
It's possible with pseudo-elements. But I don't have access to those old browsers to test.
.trap, .trap180 {
color: black;
font: normal bold 13px Arial;
float: left;
line-height: 30px;
height: 30px;
padding: 0 4px;
background: salmon;
position: relative;
}
.trap180 {
float: right;
margin: 20px 0 0 0;
}
.trap:after,.trap180:after {
content: '';
position: absolute;
height: 0px;
width: 40px;
top: 0;
}
.trap:after {
right: -30px;
border-bottom: 30px solid salmon;
border-right: 30px solid transparent;
z-index: -10;
}
.trap180:after {
left: -30px;
border-top: 30px solid salmon;
border-left: 30px solid transparent;
z-index: -10;
}
Demo
Frankly, if you need to still support IE7, I would just use images or allow a little graceful degradation.