不吃鱼的猫

深入讲解EM这个相对尺寸单位

深入讲解如何用CSS的rem来做web app

用CSS3的rem进行响应式开发

Part 1: the box modelThe box modelThe foundation of CSS layouts is thebox model. Everything in CSS is a rectangular box.Going from the outside, each box has (optionally):margins that separ...

布局方式一、div垂直对齐1、子元素宽高已知待对齐的子元素宽高已知，父元素宽高会改变。解决方案：父元素设置相对定位（relative）。子元素设置绝对定位（absolute），向下移动50%高度再用负margin往上回移子元素高度的一半。2、子元素宽高未知待对齐的子元素宽高未知，父元素宽高会改变。解决方案：利用行内级元素垂直对齐属性。父元素设置空字符的伪元...

Sometimes when I’m reviewing code, I advise a colleague not to use IDs for CSS style selectors, and inevitably get asked why. Like standing in queues, making a cup of tea or applying a full face of ma...