Gunakan display:flex untuk mengisi ruang menegak yang tinggal menggunakan CSS

Question

Dalam susun atur 3 baris: Baris atas hendaklah bersaiz mengikut kandungannya Baris bawah hendaklah mempunyai ketinggian tetap dalam piksel Baris tengah perlu mengembang untuk mengisi bekas Masalahnya ialah apabila kandungan utama mengembang ia memerah garis Pengepala dan pengaki : bahagian{display:flex;flex-flow:column;align-items:stretch;height:300px;}header{flex:01auto;background:tomato;}div{flex:11auto

P粉555696738 · Answer

Contoh di bawah termasuk gelagat menatal apabila kandungan komponen pusat yang dikembangkan melebihi hadnya. Selain itu, komponen tengah mengambil 100% ruang yang tinggal dalam port pandangan.

jsfiddle di sini

html, body, .r_flex_container{
    height: 100%;
    display: flex;
    flex-direction: column;
    background: red;
    margin: 0;
}
.r_flex_container {
    display:flex;
    flex-flow: column nowrap;
    background-color:blue;
}

.r_flex_fixed_child {
    flex:none;
    background-color:black;
    color:white;

}
.r_flex_expand_child {
    flex:auto;
    background-color:yellow;
    overflow-y:scroll;
}

Contoh HTML yang boleh digunakan untuk menunjukkan tingkah laku ini

This is the fixed 'header' child of the flex container

this child container expands to use all of the space given to it - but could be shared with other expanding childs in which case they would get equal space after the fixed container space is allocated.
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this is the fixed footer child of the flex container
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another line

P粉018548441 · Answer

Permudahkan:DEMO

section {
  display: flex;
  flex-flow: column;
  height: 300px;
}

header {
  background: tomato;
  /* no flex rules, it will grow */
}

div {
  flex: 1;  /* 1 and it will fill whole space left if no flex value are set to other children*/
  background: gold;
  overflow: auto;
}

footer {
  background: lightgreen;
  min-height: 60px;  /* min-height has its purpose :) , unless you meant height*/
}


  
    header: sized to content
    
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    main content: fills remaining space
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    footer: fixed height in px