Gradient borders

Question

I\'m trying to apply a gradient to a border, I thought it was as simple as doing this:

border-color: -moz-linear-gradient(top, #555555, #111111);


        

Answer 1

Try this, works fine on web-kit

.border { 
    width: 400px;
    padding: 20px;
    border-top: 10px solid #FFFF00;
    border-bottom:10px solid #FF0000;
    background-image: 
        linear-gradient(#FFFF00, #FF0000),
        linear-gradient(#FFFF00, #FF0000)
    ;
    background-size:10px 100%;
    background-position:0 0, 100% 0;
    background-repeat:no-repeat;
}

<div class="border">Hello!</div>

Answer 2

instead of borders, I would use background gradients and padding. same look, but much easier, more supported.

a simple example:

.g {
background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0.33, rgb(14,173,173)), color-stop(0.67, rgb(0,255,255)));
background-image: -moz-linear-gradient(center bottom, rgb(14,173,173) 33%, rgb(0,255,255) 67% );
padding: 2px;
}

.g > div { background: #fff; }

<div class="g">
    <div>bla</div>
</div>

---

EDIT: You can also leverage the :before selector as @WalterSchwarz pointed out:

body {
    padding: 20px;
}
.circle {
    width: 100%;
    height: 200px;
    background: linear-gradient(to top, #3acfd5 0%, #3a4ed5 100%);
    border-radius: 100%;
    position: relative;
    text-align: center;
    padding: 20px;
    box-sizing: border-box;
}
.circle::before {
    border-radius: 100%;
    content: '';
    background-image: linear-gradient(to bottom, #3acfd5 0%, #3a4ed5 100%);
    top: -10px;
    left: -10px;
    bottom: -10px;
    right: -10px;
    position: absolute;
    z-index:-1;
}

<div class="circle"></div>

Answer 3

Mozilla currently only supports CSS gradients as values of the background-image property, as well as within the shorthand background.

— https://developer.mozilla.org/en/CSS/-moz-linear-gradient

Example 3 - Gradient Borders

border: 8px solid #000;
-moz-border-bottom-colors: #555 #666 #777 #888 #999 #aaa #bbb #ccc;
-moz-border-top-colors: #555 #666 #777 #888 #999 #aaa #bbb #ccc;
-moz-border-left-colors: #555 #666 #777 #888 #999 #aaa #bbb #ccc;
-moz-border-right-colors: #555 #666 #777 #888 #999 #aaa #bbb #ccc;
padding: 5px 5px 5px 15px; 

— http://www.cssportal.com/css3-preview/borders.htm

Answer 4

try this code

.gradientBoxesWithOuterShadows { 
height: 200px;
width: 400px; 
padding: 20px;
background-color: white; 

/* outer shadows  (note the rgba is red, green, blue, alpha) */
-webkit-box-shadow: 0px 0px 12px rgba(0, 0, 0, 0.4); 
-moz-box-shadow: 0px 1px 6px rgba(23, 69, 88, .5);

/* rounded corners */
-webkit-border-radius: 12px;
-moz-border-radius: 7px; 
border-radius: 7px;

/* gradients */
background: -webkit-gradient(linear, left top, left bottom, 
color-stop(0%, white), color-stop(15%, white), color-stop(100%, #D7E9F5)); 
background: -moz-linear-gradient(top, white 0%, white 55%, #D5E4F3 130%); 
}

or maybe refer to this fiddle: http://jsfiddle.net/necolas/vqnk9/

Answer 5

There is a nice css tricks article about this here: https://css-tricks.com/gradient-borders-in-css/

I was able to come up with a pretty simple, single element, solution to this using multiple backgrounds and the background-origin property.

.wrapper {
  background: linear-gradient(#222, #222), 
              linear-gradient(to right, red, purple);
  background-origin: padding-box, border-box;
  background-repeat: no-repeat; /* this is important */
  border: 5px solid transparent;
}

The nice things about this approach are:

1. It isn’t affected by z-index
2. It can scale easily by just changing the width of the transparent border

Check it out: https://codepen.io/AlexOverbeck/pen/axGQyv?editors=1100