Creating a slanted line across a <div> or <span> tag

I'm looking to create a diagonal line from the upper-right corner to the lower-left corner within a <div> or <span>. The issue is that the content length varies, so using a static image won't be effective. Essentially, I want to achieve what's mentioned in this post for a <div> or a <span>.

Some of the ideas presented here catch my interest: http://jsfiddle.net/zw3Ve/11/

Another resource with intriguing concepts can be found here: http://css-tricks.com/forums/discussion/13384/diagonal-line/p1

This serves as a follow-up to my previous attempt at resolving this issue: How to strike through obliquely with css

Despite all these references, I'm struggling to find a solution on my own. While a purely CSS approach seems feasible, I lack the necessary skills to implement it. I'm also open to utilizing jQuery if needed.

Answer №1

If you want to achieve this effect using only CSS and no javascript, you can utilize an inline SVG background.

.background {
   // Create an SVG design from top left to bottom right 
   background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' version='1.1' preserveAspectRatio='none' viewBox='0 0 10 10'> <path d='M0 0 L0 10 L10 10' fill='red' /></svg>");
   background-repeat:no-repeat;
   background-position:center center;
   // Scale it 
   background-size: 100% 100%, auto;
}

You can view a demonstration of this technique on my fiddle:

http://jsfiddle.net/3GWw2/

Answer №2

Creating a diagonal color transition on a square can be achieved using linear-gradient. For instance, to create a green and white square with a diagonal cut from bottom left to top right, you can apply the following background attribute:

background: linear-gradient(to bottom right, white, white 50%, green 50%, green);

This configuration ensures that the square begins as white at the top left corner and maintains this color until reaching the diagonal line. The color switch from white to green is instantaneous due to both colors being set at 50%. If you desire a gray separation between the two colors, experiment with this approach:

background: linear-gradient(to bottom right, white, white 48%, gray 48%, gray 52%, green 52%, green);

Answer №3

Does using an image in the background instead of a plain color make the first fiddle example better?

Check out this updated fiddle

.line {
    display:inline-block;
    border: 1px solid #ccc;
    margin: 10px;
    padding: 10px;
    background:url(http://i.piccy.info/i7/c7a432fe0beb98a3a66f5b423b430423/1-5-1789/1066503/lol.png);
    background-size:100% 100%;
}

Answer №4

If you are looking to incorporate an SVG image, consider using one like the example below:

<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Tiny//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-tiny.dtd">
<svg version="1.1" baseProfile="tiny" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
 x="0px" y="0px" width="200px" height="50px" viewBox="0 0 200 50">
    <line fill="none" stroke="#000" x1="0" y1="0" x2="200" y2="50"/>
</svg>

To apply this as a background, set it to your span or div element.

.class-of-div-or-span { background: url("line.svg") no-repeat scroll 0 0 / 100% 100% transparent; }

Keep in mind that you need to declare display:block or display:inline-block for your span to make it work correctly.

In addition to setting it as a background, you can also inline the svg, use it within an object tag, or embed it directly into your CSS file.

Answer №5

When it comes to geometric shapes, the challenge lies in working with rectangles rather than squares. While calculating a diagonal for a square is straightforward, dealing with rectangles requires some manual math. Remember those days when kids questioned the practicality of learning how to find the length of a diagonal? :P Here's my approach:

div.container /*creating a rectangular container (300x300)*/
{
width: 300px;
height: 150px;
background-color: #aaa;
padding-top: 150px;
}
div.line
{
position: relative;
z-index: 1;
left: -61px; /*confusing but necessary adjustment*/
width: 423px; /*since the container is square, this represents its diagonal: 300*1.41*/
height: 1px;
background-color: #000;
transform: rotate(45deg); /*simple for a square, trickier for a rectangle requiring tangent calculation*/
-ms-transform: rotate(45deg);
-webkit-transform: rotate(45deg);
}

HTML:
<div class="container">
<div class="line"></div>
</div>

Check out the demo on jsfiddle: http://jsfiddle.net/LWAKn/

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