Scaling results in gaps between CSS shapes - css

I have a series of CSS hexagons. I would like to apply CSS scale transform for different viewport widths, though gaps are appearing within my hexagon shapes.
This problem is most evident on Firefox at any scale value. It also appears in Chrome if scaled to non-integer values. Firefox additionally shows baffling horizontal lines in the :before and :after pseudo elements, though these lines are in the centre of a border and not at the edge of any shape.
Snippets
A simplified version of my markup and styles is below, and also on JS Fiddle.
HTML:
<div class="scale">
<div class="hex"></div>
</div>
Styles:
.scale {
margin: 8em auto;
text-align: center;
-webkit-transform:scale(2.5, 2.5);
-moz-transform:scale(2.5, 2.5);
-ms-transform:scale(2.5, 2.5);
-o-transform:scale(2.5, 2.5);
transform:scale(2.5, 2.5);
}
.hex {
position: relative;
display: inline-block;
margin: 0 30px;
width: 60px;
height: 104px;
background-color: #000;
&:before, &:after {
position: absolute;
width: 0;
border: 1px solid transparent;
border-width: (52px) (30px);
content: "";
}
&:before {
border-right-color: #000;
right: 100%;
}
&:after {
border-left-color: #000;
left: 100%;
}
}
Screenshots (Linux Mint)
Chrome: scaled at x2 (no gaps evident at integer values)
Firefox: scaled at x2 (gaps, plus horizontal lines)
Is there help?
My guess is that these lines are appearing because of some numerical rounding, but I really am out of ideas. Is it possible to fix this? Is there another approach I could use for this scaling? Thanks in advance for any responses.

I am a bigger fan of using top/bottom methods of creating hexagons, because they're just very simple. Check out the one I threw in your jsfiddle.
Just fix up the actual measurements and the method I used should get rid of your problem.
.hexagon{
margin-left: 8em;
height: 4em;
width: 4em;
-webkit-transform:scale(2.5, 2.5);
-moz-transform:scale(2.5, 2.5);
-ms-transform:scale(2.5, 2.5);
-o-transform:scale(2.5, 2.5);
transform:scale(2.5, 2.5);
position: relative;
}
.top{
top: 2em;
border-bottom: 2em solid black;
border-left: 1em solid transparent;
border-right: 1em solid transparent;
}
.bottom{
top: 4em;
border-top: 2em solid black;
border-left: 1em solid transparent;
border-right: 1em solid transparent;
}

It seems to be a scaling bug as the gaps seem to stay when the item is transformed by other means, such as rotation.
The best way I can get around it is by adding the element to the .hex class instead of the .scale class, and repositioning. I hope this helps to lead you toward a better solution.
Good luck!

Related

Create custom graphic in CSS?

Is it possible to somehow create the following in CSS? (See attached image)
What i want to achieve is to be able to change the background-color of the bubble with CSS.
One solution would be to save the background bubble in a bunch of different colors and depending on the color chosen display the correct background image. However this would not be as dynamic as i wish.
Any ideas here?
Something like this was done over at CSS Tricks using pseudo-elements. The only limitation I can think of or foresee is the border that goes around the object... CSS Round-out borders
Using the :after and :before pseudo elements I was able to take the same concept and apply it to create your shape. Again... The only catch is the border. Also... it requires the background behind it to be solid, so that you can mimic the background color... No patterns or transparency here. Try changing the colors of the :after and :before elements and you'll see how its done.
JSFiddle Example
<div class="bubble">
<span>Some Text</span>
</div>
body { background: #999;}
.bubble {
position: relative;
width: 150px;
height: 60px;
border-radius: 10px 10px 0 10px;
border: 1px solid #fff;
background: #444;
}
.bubble:before {
content: " ";
position: absolute;
width: 30px;
height: 30px;
bottom: 0;
right: -30px;
background: #444;
}
.bubble:after {
content: " ";
position: absolute;
width: 60px;
height: 60px;
bottom: 0;
right: -60px;
background: #999;
border-radius: 100%;
}
The other options are nice css approaches but with the border on a shape like that will not be possible with just css.
In my approach I am going to use an svg image.
This is a path in the image and as you can see classes and ids are possible to use on an svg image.
<path class="bubBg" fill="#7C7C7C"
Here is a JSFIDDLE you can play around with.
(currently I believe this is the best option to have that exact design but Michael's answer is pretty good)
Here's what I did: Not exactly the same bubble but similiar, Check it out
Fiddle: http://jsfiddle.net/zD3bV/1/
CSS
#speech-bubble {
width: 120px;
height: 80px;
background: purple;
top: 2px;
position: absolute;
-moz-border-radius: 10px;
-webkit-border-radius: 10px;
border-radius: 10px;
}
#speech-bubble:before {
content:"";
position: absolute;
width: 0;
height: 0;
border-top: 13px solid transparent;
border-right: 26px solid purple;
border-bottom: 13px solid transparent;
margin: 13px 0 0 -25px;
}
#talk-bubble {
width:120px;
height:80px;
background:blue;
position:relative;
-moz-border-radius:10px;
-webkit-border-radius:10px;
border-radius:10px;
}
#talk-bubble:before {
content:"";
position:absolute;
right:100%;
top:26px;
width:0;
height:0;
border-top:13px solid transparent;
border-right:26px solid blue;
border-bottom:13px solid transparent;
}
Also, search for css shapes you'll more likely to get the best results and then you can modify them according to your needs

How do I draw a line with a semicircle in the middle with CSS?

I would like to draw something like this with CSS:
http://i.imgur.com/Fjn8uK4.jpg
CSS is the wrong tool for this job.
The way I'd recommend doing this sort of thing would be to use border-image, with a simple SVG image in the border.
There are some good demos of the power of this technique here: http://www.sitepoint.com/css3-border-image/
With an SVG image, you can draw any shape you like. Using pure CSS, you're fundamentally limited by the fact that CSS just isn't designed for this sort of thing. Yes, it can be done in CSS, given a bit of hacking with border-radius, but it won't be pretty. SVG will make it easy.
The down-side, of course, is that border-image and SVG aren't supported in older IE versions. But then again, nor is border-radius, and other CSS techniques you may need in order to achieve this in pure CSS. If you need older browser support, an plain old-school graphic will be necessary.
You can try this with css
.semi{
height:25px;
width:40px;
border-radius: 0 0 40px 40px;
margin:0px auto;
border:1px solid #CCC;
border-top:none;
position:relative;
background:white;
top:-2px;
}
.parent
{
width:500px;
text-align:center;
border-top:1px solid #CCC;
}
JS Fiddle Demo
Demos:
Basic: http://jsfiddle.net/kDAAQ/2/
Uses clip to achieve smoother lines: http://jsfiddle.net/kDAAQ/4/
Alternatives
However, I'd go for an SVG, especially if you wanted something any more complex than this. You could simply use an image, or you can also style SVGs with CSS.
Why an SVG? It's important that you don't use a raster image format (like GIF, JPEG, PNG) due to the increasing number of high-density displays.
Raster images for precise objects (like lines, circles, etc.) look poor when scaling between physical and logical pixels. A vector format (such as SVG) scales cleanly and will look great at any resolution/density.
Code for Demo #1
<div id="line"></div>
#line{
border-radius: 16px;
height: 32px;
width: 32px;
border-bottom: 2px solid blue;
position: relative;
left: 200px;
}
#line:before{
width: 200px;
content: "";
border-bottom: 1px solid blue;
position: absolute;
left: -200px;
top: 18px;
}
#line:after{
top: 18px;
width: 200px;
content: "";
border-bottom: 1px solid blue;
position: absolute;
left: 32px;
}
Just for fun, here's a single element version using background gradients: (JSFiddle)
.semi-circle {
width:150px;
height:18px;
background-color:white;
background:
linear-gradient(white,white 4px,silver 4px,white 5px,white),
linear-gradient(white,white 4px,silver 4px,white 5px,white),
radial-gradient(circle 40px at 50% -19px, white, white 30px, silver 31px, white 31px);
background-size:50% 40px,50% 40px,100% 40px;
background-position:-20px 0,95px 0,0 0;
background-repeat:no-repeat;
}
On some webkit browsers you'll need to include webkit prefixes to get this to work, and the gradient syntax might even be different on older browsers. But as others have said, this is not really a good use for CSS anyway - I just thought it was a fun exercise.
<div class='line'></div>
<div class='halfCircle'></div>
<div class='line'></div>
div {
float:left;
}
.line{
height:45px;
width:90px;
border-top: 1px solid green;
}
.halfCircle{
height:45px;
width:90px;
border-radius: 0 0 90px 90px;
-moz-border-radius: 0 0 90px 90px;
-webkit-border-radius: 0 0 90px 90px;
border-left: 1px solid green;
border-bottom: 1px solid green;
border-right: 1px solid green;
}
http://jsfiddle.net/wGzMd/
My attempt: http://jsfiddle.net/Wtv9z/
div{
width: 100px;
height: 100px;
border-radius: 50px;
border-bottom: solid 1px #ccc;
margin: 0px 100px;
position: relative;
}
div:before{
content:'';
position: absolute;
top: 75px;
left: -92px;
width: 100px;
height: 1px;
border-bottom: solid 1px #ccc;
}
div:after{
content:'';
position: absolute;
top: 75px;
right: -92px;
width: 100px;
height: 1px;
border-bottom: solid 1px #ccc;
}

Stylist Css Border Creation

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.:)

How can I create a CSS border on a diagonal element

Here is an example. http://jsfiddle.net/52c7t/
Simply: I'm trying to get the div on the right side, to have a border like the div on the left. (I'd want the border to be on the left side of the right div)
I tried a million different combinations and haven't been able to do it. I was trying to avoid making an image and do this with css.
Thanks for your help!
UPDATE:
Image of what I mean. Sorry about my graphic design skills :P
http://i.imgur.com/pGSnL.png
HTML
<div id = "top_bar">
<div id="top_left_button" >border</div>
<div class = "trapezoid"> none </div>
</div>​
CSS
.trapezoid{
vertical-align: middle;
position:absolute;
border-bottom: 60px solid blue;
border-left: 45px solid transparent;
border-top-left-radius:30px;
*border-top-right-radius:15px;
*border-bottom-right-radius:3px;
height: 0;
width: 50px;
display: inline-block;
right:1px;
}
#top_bar{
background-color: #000;
border-bottom: 1px solid #666;
color: #222;
position:fixed;
left:0px;
top: 0px;
width:100%;
overflow:hidden;
height: 50%;
font-weight: normal;
white-space: nowrap;
color: white;
z-index:20;
line-height: 45px;
min-width:320px;
max-width: 320px;
max-height:48px;
border-radius: 5px;
text-shadow: rgba(0,0,0,0.6) 0px -1px 0px;
}
#top_bar:after {
content: '';
width: 10%;
display: inline-block;
font-size: 0;
line-height: 0
}
#top_title, #top_left_button, #notifications, #top_right_button {
color: white;
height: 100%;
overflow:hidden;
display: inline-block;
text-align: center;
vertical-align: middle;
}
#top_left_button,#top_right_button{
width: 20%;
background: rgba( 100, 255, 255, .1 );
}
#top_left_button{
border-right: 2px solid #666;
}​
EDIT: UPDATED LINK
The simple solution is to create another div since your blue div is already made up using the border property.
That new div is essentially a clone of the blue div, but will be colored red and made a little larger using the CSS width property. This becomes a pseudo border for the blue div.
Example of new div:
.trapezoid-border{
vertical-align: middle;
position:absolute;
border-bottom: 60px solid red; /* Color Changed will be pseudo-border color */
border-left: 45px solid transparent;
border-top-left-radius:30px;
*border-top-right-radius:15px;
*border-bottom-right-radius:3px;
height: 0;
width: 53px; /* Extra 3 pix when compared to .trapezoid class width */
display: inline-block;
right:1px;
}
jsFiddle DEMO
Frankly, I think you should be using an image for this, but if you really want or have to avoid that, a somewhat dirty (though I think very convincing looking) fix would be to create a fixed sized red <div>, that you position and rotate (using the transform property) just right to achieve the appropriate effect.
.redborder {
background-color:red;
width:3px;
height:70px;
transform:rotate(37deg);
-ms-transform:rotate(37deg);
-moz-transform:rotate(37deg);
-webkit-transform:rotate(37deg);
-o-transform:rotate(37deg);
position:absolute;
right:70px;
top:-10px;
}
On jsfiddle: http://jsfiddle.net/QBTpV/18/
(tested in Chrome and IE)

Placing text on a CSS trapezoid

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.

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