html - CSS Grid Layout Row Height 0px When Empty

Question

I have a html:

<div id="container">
    <div id="child1"></div>
    <div id="child2">
        <div id="fullpage"></div>
    </div>
    <div id="child3"></div>
</div>

and css:

#container {
    display:grid;
    grid-template-rows: minmax(0, auto) auto minmax(0,75px);
}

The empty child1 will have height filling the gap between the top screen and child2. I thought minmax(0, auto) will push child 1 into 0px height?

What I want is when the child is empty or the element inside it are hidden, the height should be 0.

How can I achieve this?

Answer 1

等待大神解答