CSS fade out horizontal rule / line styled div eff

2019-01-22 09:16发布

站内问答 / HTML/CSS
637 5 4

I'm a big fan of minimal use of images and was wondering if anyone had a tactic (or if it's possible) to create this kind of thing with pure static CSS?

http://www.flickr.com/photos/jahimandahalf/6780397612/

I'm referring an effect of a line seemingly getting skinnier and fading out and the shadow effect underneath it.

I was thinking it might be possible to do a CSS shape trick with it like the triangles:

http://css-tricks.com/snippets/css/css-triangle/

Or perhaps with rotation on box-shadow using 'transform':

zenelements.com/blog/css3-transform/

Any ideas?

5条回答
Summer. ? 凉城
2楼-- · 2019-01-22 09:37

You can use CSS3's stops and the :after pseudo-element to achieve such an effect. The trick is to add a border to the <hr> element by using the :after pseudo-element and position it in the center of the initial gradient with a soft color that ends with the gradient.

Here is a quick demo, and another demo using some color.

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小情绪 Triste *
3楼-- · 2019-01-22 09:37

Ok so I've answered my own question but I've read the Stackoverflow forums and it seems to be acceptable (if not actually encouraged!)

So...

HTML:

<html>
<head>
<TITLE>TEST</TITLE>
<link rel="stylesheet" type="text/css" href="test.css" />
</head>
<body>

<div id="wrap">
<div id="gradient">
</div>
</div>

</body>
</html>

CSS:

#wrap
{
overflow:hidden;
height:10px;
width:600px;
height:20px;
margin:auto;
margin-top:200px;
}


#gradient
{
height:20px;
width:580px;
margin:auto;
margin-top:-11px;
background: -moz-radial-gradient(center, ellipse cover,  rgba(10,10,10,1) 0%, rgba(8,8,8,1) 19%, rgba(3,3,3,0) 80%, rgba(1,1,1,0) 100%); /* FF3.6+ */
background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,rgba(10,10,10,1)), color-stop(19%,rgba(8,8,8,1)), color-stop(80%,rgba(3,3,3,0)), color-stop(100%,rgba(1,1,1,0))); /* Chrome,Safari4+ */
background: -webkit-radial-gradient(center, ellipse cover,  rgba(10,10,10,1) 0%,rgba(8,8,8,1) 19%,rgba(3,3,3,0) 80%,rgba(1,1,1,0) 100%); /* Chrome10+,Safari5.1+ */
background: -o-radial-gradient(center, ellipse cover,  rgba(10,10,10,1) 0%,rgba(8,8,8,1) 19%,rgba(3,3,3,0) 80%,rgba(1,1,1,0) 100%); /* Opera 12+ */
background: -ms-radial-gradient(center, ellipse cover,  rgba(10,10,10,1) 0%,rgba(8,8,8,1) 19%,rgba(3,3,3,0) 80%,rgba(1,1,1,0) 100%); /* IE10+ */
background: radial-gradient(center, ellipse cover,  rgba(10,10,10,1) 0%,rgba(8,8,8,1) 19%,rgba(3,3,3,0) 80%,rgba(1,1,1,0) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#0a0a0a', endColorstr='#00010101',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */
}
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劳资没心，怎么记你
4楼-- · 2019-01-22 09:43

In order to reproduce that horizontal rule, you can use a CSS3 linear-gradient. Just create a div with about a 3px height and apply the following CSS (change the colors as needed):

background: #ffffff; /* Old browsers */
background: -moz-linear-gradient(left,  #ffffff 0%, #2989d8 25%, #207cca 75%, #ffffff 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, right top, color-stop(0%,#ffffff), color-stop(25%,#2989d8), color-stop(75%,#207cca), color-stop(100%,#ffffff)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(left,  #ffffff 0%,#2989d8 25%,#207cca 75%,#ffffff 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(left,  #ffffff 0%,#2989d8 25%,#207cca 75%,#ffffff 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(left,  #ffffff 0%,#2989d8 25%,#207cca 75%,#ffffff 100%); /* IE10+ */
background: linear-gradient(left,  #ffffff 0%,#2989d8 25%,#207cca 75%,#ffffff 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#ffffff',GradientType=1 ); /* IE6-9 */

Keep in mind that filter does not support color stops, so you may want an image fall back for < IE10.

Build your own CSS3 gradient here: http://www.colorzilla.com/gradient-editor/

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兄弟一词,经得起流年.
5楼-- · 2019-01-22 09:52 

hr {
  height: 1px;
  margin: 50px 0;
  background: -webkit-gradient(linear, 0 0, 100% 0, from(rgba(0, 0, 0, 0)), color-stop(0.5, #333333), to(rgba(0, 0, 0, 0)));
  background: -webkit-linear-gradient(left, rgba(0, 0, 0, 0), #333333, rgba(0, 0, 0, 0));
  background: -moz-linear-gradient(left, rgba(0, 0, 0, 0), #333333, rgba(0, 0, 0, 0));
  background: -o-linear-gradient(left, rgba(0, 0, 0, 0), #333333, rgba(0, 0, 0, 0));
  background: linear-gradient(left, rgba(0, 0, 0, 0), #333333, rgba(0, 0, 0, 0));
  border: 0;
}
hr:after {
  display: block;
  content: '';
  height: 30px;
  background-image: -webkit-gradient(radial, 50% 0%, 0, 50% 0%, 116, color-stop(0%, #cccccc), color-stop(100%, rgba(255, 255, 255, 0)));
  background-image: -webkit-radial-gradient(center top, farthest-side, #cccccc 0%, rgba(255, 255, 255, 0) 100%);
  background-image: -moz-radial-gradient(center top, farthest-side, #cccccc 0%, rgba(255, 255, 255, 0) 100%);
  background-image: -o-radial-gradient(center top, farthest-side, #cccccc 0%, rgba(255, 255, 255, 0) 100%);
  background-image: radial-gradient(farthest-side at center top, #cccccc 0%, rgba(255, 255, 255, 0) 100%);
}
<hr>

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The star\"
6楼-- · 2019-01-22 09:57

This code create a normal hr but the difference will is it will have both end with fade effect(gradient black to blue)

hr{
border-top-color: black;
margin-bottom: 25px;
width: 80%;
}
hr::before{
display: block;
margin-left: -10%;
margin-top: -1px;
content:"";
background: linear-gradient(to left, black, blue);
width: 10%;
height: 1px;
}
hr::after{
display: block;
margin-left: 100%;
margin-top: -1px;
content:"";
background: linear-gradient(to right, black, blue);
width: 10%;
height: 1px;
}
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