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section 下面是多列展示区域
p 样式里规定是3列, 但内容总数为偶数4, 则列数为2
div.container
div 1
div 2
div 3
div 4
p 下面添加一个内容, 则列数变3列, 因为内容总数为5, 是奇数
button#add 点我添加5
section 但是看下面, 偶数一样可以三列, 又是怎么回事? 因为有一个子元素设置了
code margin: 1px 0;
p 只要设置了上下边距中的一个, 就可以达到这样的效果, 设置左右边距是没有效果的
p 设置border也能达到同样的效果, 但padding则不行
div.container
div.margin 1
div 2
div 3
div 4
section 下面看看跨列对顺序的影响
p 这里设置的列数为2 数字3是跨列的
p 在Chrome55下, 排列顺序由从上到下, 变成从左到右了, Firefox则照旧. 这个顺序是依赖具体浏览器的实现
div.col-count-two
div 1
div 2
div.cross-col 3
div 4
div 5
.container
-webkit-column-count 3
-moz-column-count 3
column-count 3
// column-width 30vw
// column-gap 1px
div
// 加border也会变3列
// border 1px dotted
.margin
//有了这句话, 内容为偶数也就能变成3列了
margin 1px 0
.col-count-two
-webkit-column-count 2
-moz-column-count 2
column-count 2
.cross-col
-webkit-column-span all
-moz-column-span all
column-span all
section
margin-bottom 10px
&::before
content ''
display block
border-top 1px solid
margin 10px 0
window.onload = function(){
document.getElementById('add').onclick = function() {
var ele = document.createElement('div')
ele.textContent = 5
document.querySelector('.container').appendChild(ele)
this.onclick = null
}
}
Also see: Tab Triggers