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HomeWeb Front-endHTML Tutorialritina视网膜屏中CSS3边框图片像素虚边的问题_html/css_WEB-ITnose

虽然CSS3新增了这个功能,但是在W3school里面并没有给出具体详细的解释,还好网上不乏大神给你我们很全面的解释其中的原理-css3:border-image边框图像详解

边框图片的原理是四个角不变,边拉伸或平铺,border-image-slice:27 27 27 27(可以缩写,同内外边距),距离各边向内偏移的距离后切割

 

按照此方法需要进行自己的borderimg的制作(类似于sprite)

(21+1+21)

如上,一个像素边框在PC端显示没有任何问题,但是按照 走向视网膜(Retina)的Web时代 中对一个像素在ritina中的解释,会分为四个设备像素来显示,所以产生一模糊虚边,导致内部产生了一个虚框,如图上

代码为border:solid 21px transparent; border-image:url("corner.png") 21 round;

为了解决这个问题,需要对原始图片做一些处理,四边各留出一个像素的空白,如图下

([1+21]+1+[21+1])

代码为border:solid 22px transparent; border-image:url("corner2.png") 22 round;

 

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