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This time I will bring you the use of CSS3 to implement luminous square borders and the precautions for using CSS3 to implement luminous square borders. The following is a practical case, let’s take a look.
This article introduces a code that uses pseudo elements to realize the gradual glow of the border, mainly using the two attributes of scale and opacity. Let’s take a look at the detailed introduction:The rendering is as follows:
HTML code:
<p class="light"> <img src="http://tva2.sinaimg.cn/crop.0.0.180.180.180/6830a53bjw8f2qo4xzc2zj20500500t0.jpg"/> <p class="light-inner"> <p>前端开发博客</p> <p>关注前端开发</p> </p> </p>
CSS code:
.light{ background: #fff; width: 180px; height: 180px; margin: 100px auto; position: relative; text-align: center; color: #333; transform:translate3d(0,0,0); } .light-inner{ padding: 60px 30px 0; pointer-events: none; position: absolute; left: 0; top: 0; bottom: 0; right: 0; text-align: center; transition: background 0.35s; backface-visibility: hidden; } .light-inner:before, .light-inner:after{ display: block; content: ""; position: absolute; left: 30px; top: 30px; right: 30px; bottom: 30px; border: 1px solid #fff; opacity: 0; transition: opacity 0.35s, transform 0.35s; } .light-inner:before{ border-left: 0; border-right: 0; transform:scaleX(0,1); } .light-inner:after{ border-top: 0; border-bottom: 0; transform: scaleY(1,0); } .light:hover .light-inner{ background: #458fd2 } .light:hover .light-inner:before, .light:hover .light-inner:after{ opacity: 1; transform: scale3d(1,1,1); } .light-inner p{ transition: opacity .35s, transform 0.35s; transform: translate3d(0,20px,0); color: #fff; opacity: 0; line-height: 30px; } .light:hover .light-inner p{ transform: translate3d(0,0,0); opacity: 1; }
Implementation steps:
The glowing square is mainly through the pseudo of .light-inner Elements: before and :after are used to realize The upper and lower borders are gradually expanded from the middle to both sides: scaleX(0) to scaleX(1)The left and right borders are expanded from the middle to the upper and lower sides : scaleY(0) to scaleY(1) forms a square that gradually glows from the middle to the corners: opacity:0 to opacity:1. There are no other skills.Introduction to scale
scale(Detailed explanation of the use of CSS Selector
Detailed explanation of the special usage skills of CSS margin
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