重点是:父div一定要有position属性(不管relative还是absolute),子div就可以设置position:absolute,这时子div的位置是相对父div是固定的。 以下自己根据文章自己加了些改动,主要是测试当父div内部追加了div之后,看原来的子div的位置是否受影响,事实证明没影响。 .parent { width:250px; height:250px; background-colo...
css div position to parent To position an element "fixed" relative to a parent element, you wantposition:absoluteon the child element, and any position mode other than the default or static on your parent element. For example: #parentDiv{position:relative; }#childDiv{position:absolute;left:50...
As the parent is positioned relative to the grandparent with bottom:0px; then it is given a position:absolute. The child which is positioned top right of it’s parent is also position:absolute; with top:0px; and right:0px; and the grandparent has the CSS property position:relative;....
上面的代码中，parent 元素通过设置 position: relative 成为了一个已定位元素，child 元素通过设置 positi...
absolute position element is positioned relative to the first parent element that has a position ...
.parent { position: relative; } .child { position: absolute; top: 50%; height: 100px; margin-top: -50px; } 演示程序: 演示代码 2.3.2 未知高度的块级元素 当垂直居中的元素的高度和宽度未知时,我们可以借助CSS3中的transform属性向Y轴反向偏移50%的方法实现垂直居中。但是部分浏览器存在兼容性的问题...
position: absolute Can be offset with top, right, bottom and left. Offset relative toits nearest relative-type positioned parent. Creates relative-type positioning context for children. position: fixed Can be offset with top, right, bottom and left. ...
When assignedposition: relative, an element follows the render flow of the page, but will be shiftedrelativeto its initial position. To determine the amount of offset, you set values for thetop,right,bottom, and/orleftproperties. Surrounding elements won’t be affected, but there will be spac...
position:relative; align-items:end; } #container > div{ position:absolute; } Try it Yourself » Related Pages CSS tutorial:CSS grid CSS tutorial:CSS flexbox CSS Reference:align-content property CSS Reference:align-self property CSS Reference:justify-content property ...
position:relative; left:30px; border:3px solid #73AD21; } Try it Yourself » position: fixed; An element withposition: fixed;is positioned relative to the viewport, which means it always stays in the same place even if the page is scrolled. The top, right, bottom, and left properties...