Since the amid Lord has raised the retina screen. Can have a lot of front-end brothers of the pixel eye, obsessive-compulsive partners days can be suffering. To draw a true 1-pixel border, the front-end apes were abused by browsers.
About what is the mobile side 1 pixel border problem, first on the two pictures, we will understand.
Figure 1
Figure 2
There are many ways to implement a 1PX border, with advantages and disadvantages, such as through the background image implementation, through Transform:scale (0.5). This implementation is realized through the Viewport+rem, the advantage is that it can adapt to the known various types of mobile phone screen, and there is no other way to change the color difficult, the problem of corner shadow failure. Disadvantage, this method is suitable for new projects, if the old project to use this method, the amount of change estimates will be relatively large.
<spanstyle= "FONT-SIZE:18PX;"><HTML> <Head> <title>1px question</title> <Metahttp-equiv= "Content-type"content= "Text/html;charset=utf-8"> <Metaname= "Viewport"ID= "Webviewport"content= "initial-scale=1, maximum-scale=1, minimum-scale=1, User-scalable=no"> <style>HTML{font-size:1px; } * {padding:0;margin:0; }. Bds_b{Border-bottom:1px solid #ccc; }. A,. b{Margin-top:1rem;padding:1rem;font-size:1.4rem; }. A{width:30rem; }. b{background:#f5f5f5;width:20rem; } </style> <Script> varViewport=Document.queryselector ("Meta[name=viewport]"); //The following is based on device pixel settings viewport if(Window.devicepixelratio== 1) {Viewport.setattribute ('content', 'width=device-width,initial-scale=1, maximum-scale=1, minimum-scale=1, User-scalable=no'); } if(Window.devicepixelratio== 2) {Viewport.setattribute ('content', 'width=device-width,initial-scale=0.5, maximum-scale=0.5, minimum-scale=0.5, User-scalable=no'); } if(Window.devicepixelratio== 3) {Viewport.setattribute ('content', 'width=device-width,initial-scale=0.3333333333333333, maximum-scale=0.3333333333333333, minimum-scale= 0.3333333333333333, User-scalable=no'); } varDocel=document.documentelement; varfontsize= Ten *(Docel.clientwidth/ the) + 'px'; DocEl.style.fontSize=fontsize; </Script> </Head> <Body> <Divclass= "Bds_b a">The bottom edge width is virtual 1 pixels.</Div> <Divclass= "B">The upper border width is virtual 1 pixels.</Div> </Body></HTML></span>
Want to see the effect, directly copy the code down to the server, with mobile phone browsing can see the effect.
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