After a quick test, it's not as smooth as borders (in FF). Though that
may be fixable with different settings. Like I said, it was a quick
test:

.grad{
    background: rgb(0,52,120);
background: -moz-radial-gradient(center, ellipse cover,
rgba(0,52,120,1) 0%, rgba(0,52,120,1) 15%, rgba(255,255,255,1) 15%,
rgba(255,255,255,1) 25%, rgba(0,52,120,1) 25%, rgba(0,52,120,1) 38%,
rgba(255,255,255,1) 38%);
background: -webkit-gradient(radial, center center, 0px, center
center, 100%, color-stop(0%,rgba(0,52,120,1)),
color-stop(15%,rgba(0,52,120,1)), color-stop(15%,rgba(255,255,255,1)),
color-stop(25%,rgba(255,255,255,1)), color-stop(25%,rgba(0,52,120,1)),
color-stop(38%,rgba(0,52,120,1)),
color-stop(38%,rgba(255,255,255,1)));
background: -webkit-radial-gradient(center, ellipse cover,
rgba(0,52,120,1) 0%,rgba(0,52,120,1) 15%,rgba(255,255,255,1)
15%,rgba(255,255,255,1) 25%,rgba(0,52,120,1) 25%,rgba(0,52,120,1)
38%,rgba(255,255,255,1) 38%);
background: -o-radial-gradient(center, ellipse cover,
rgba(0,52,120,1) 0%,rgba(0,52,120,1) 15%,rgba(255,255,255,1)
15%,rgba(255,255,255,1) 25%,rgba(0,52,120,1) 25%,rgba(0,52,120,1)
38%,rgba(255,255,255,1) 38%);
background: -ms-radial-gradient(center, ellipse cover,
rgba(0,52,120,1) 0%,rgba(0,52,120,1) 15%,rgba(255,255,255,1)
15%,rgba(255,255,255,1) 25%,rgba(0,52,120,1) 25%,rgba(0,52,120,1)
38%,rgba(255,255,255,1) 38%);
background: radial-gradient(ellipse at center,  rgba(0,52,120,1)
0%,rgba(0,52,120,1) 15%,rgba(255,255,255,1) 15%,rgba(255,255,255,1)
25%,rgba(0,52,120,1) 25%,rgba(0,52,120,1) 38%,rgba(255,255,255,1)
38%);
filter: progid:DXImageTransform.Microsoft.gradient(
startColorstr='#003478', endColorstr='#ffffff',GradientType=1 );
width: 120px;
height: 120px;
}

HTH

On Tue, Jan 21, 2014 at 12:57 PM, Tom Livingston <tom...@gmail.com> wrote:
> Also, may be able to do it with a radial gradient and some
> well-planned color stops, but you may be then excluding some browsers
> you need to support.
>
> You can play here:
>
> http://www.colorzilla.com/gradient-editor/
>
> HTH
>
> On Tue, Jan 21, 2014 at 12:22 PM, Tom Livingston <tom...@gmail.com> wrote:
>> On Tue, Jan 21, 2014 at 12:13 PM,  <bruce.som...@web.de> wrote:
>>> I've got some sort of mental block. I would like to display a series of 
>>> concentric circles with diameter 2 cm, 4 cm, 6 cm, 8 cm ...
>>>
>>> At the moment, I have
>>> .circle1 { border: 4px solid #990000;
>>>           height: 60px; width: 60px; border-radius: 60px; }
>>>
>>> .circle2 { border: 4px solid #990000;
>>>           height: 120px; width: 120px; border-radius: 120px; }
>>>
>>>
>>> <div class="circle1"> </div>
>>> <div class="circle2"> </div>
>>>
>>> You're right - it IS quite primitive. I would like to be able to write
>>> <div class="circle" diameter: 2, 4, 6, ...;</div>
>>>
>>> and have all the circles drawn with a common center.
>>>
>>> Can it be done with CSS?
>>
>>
>>
>> In keeping with "primitive":
>>
>> <style>
>> .wrap{position: relative;width: 500px;}
>> .circle1 { border: 4px solid #990000;
>>           height: 60px; width: 60px; border-radius: 60px; margin: 26px
>> auto 0 auto; }
>>
>> .circle2 { border: 4px solid #990000;
>>           height: 120px; width: 120px; border-radius: 120px; margin: 0
>> auto 0 auto; }
>> </style>
>>
>> <div class="wrap">
>>         <div class="circle2"><div class="circle1"> </div></div>
>>     </div>
>>
>> I would guess SVG might be better, but I am not familiar with it.
>>
>>
>>
>> --
>>
>> Tom Livingston | Senior Front-End Developer | Media Logic |
>> ph: 518.456.3015x231 | fx: 518.456.4279 | mlinc.com
>
>
>
> --
>
> Tom Livingston | Senior Front-End Developer | Media Logic |
> ph: 518.456.3015x231 | fx: 518.456.4279 | mlinc.com



-- 

Tom Livingston | Senior Front-End Developer | Media Logic |
ph: 518.456.3015x231 | fx: 518.456.4279 | mlinc.com
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