CSS中相對定位relative跟絕對定位absolute的詳細作用

原創 mini_1251861209 2020-06-30 23:52

absolute：

首先講一下absolute, 設置absolute時他的父標籤一定要設一個relative，因爲absolute就是相對它來絕對佈局的，這個時候只能用top、left、right、bottom來進行佈局了,像margin就沒用了，那麼這些上下左右就是相對那個最近的帶relative的父元素來定位的

relative：

再就是relative，元素自己設置relative就可以相對自己定位，假如設一個top:-100px;,那麼就會相對自己原來的位置上移100px

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