css - flexbox 布局 設定 margin的問題

Question

最近在練習flexbox 所以先不使用bootstrap
我想要我的布局如圖 每個1 2 3 4 5 之間可以自己設定margin

如圖:

我剛知道了，只要在flexbox中設置 justify-content:space-between; ，就可以把1row剩餘的width，平均分配成margin了，而設置了flex-flow:row wrap;的話，當子項目超過100%就會自動斷行，比如說現在有個container和box，大致會是這樣。

.container{
    display:flex;
    justify-content:space-between;
    flex-flow:row wrap;
}

.box{
   flex-basis:30%;
}

如圖:

DEMO: https://jsfiddle.net/jasonHsi...

後來為了調整，又找到了一個屬性 flex-grow:1; 可以讓row剩下的width，被每個flex子項目平均分配，就是把justify-content拿掉，加上flex-grow:1;

.container{
    display:flex;
    flex-flow:row wrap;
}

.box{
   flex-basis:30%;
    flex-grow:1;
}

如圖:

DEMO:
https://jsfiddle.net/jasonHsi...

雖然很不錯，但是離我一開始想要做的布局有些出入，請問要如何利用flexbox完成這樣的布局呢?

Answer 1

<p class="row">
  <p class="col">1</p>
  <p class="col">2</p>
  <p class="col">3</p>
  <p class="col">4</p>
  <p class="col">5</p>
</p>

.row{
  display: flex;
  flex-wrap: wrap;
  background: red;
}
.col{
  box-sizing: border-box; 
  width: 30.333333%;
  margin: 10px 1.5%;
  background:#eee;
  height: 120px;
}

Effect: codepen

Answer 2

A simple implementation is to use :after to create a pseudo element to fill the last position to achieve the effect you want.

In addition, flex layout is not a panacea. Only by integrating multiple layouts can you maximize your advantages

Answer 3

Generally, flex is used to automatically calculate the remaining space. According to the situation you mentioned, it is more appropriate to use inline-block or float.

Answer 4

<ul class="ui-flex-row flex-wrap">
                <li class="ui-flex-col-33">
                    <p class="placeholder">33</p>
                </li>
                <li class="ui-flex-col-33">
                    <p class="placeholder">33</p>
                </li>
                <li class="ui-flex-col-33">
                    <p class="placeholder">33</p>
                </li>
                <li class="ui-flex-col-33">
                    <p class="placeholder">33</p>
                </li>
                <li class="ui-flex-col-33">
                    <p class="placeholder">33</p>
                </li>
                <li class="ui-flex-col-33">
                    <p class="placeholder">33</p>
                </li>
            </ul>
.flex-wrap {
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-flex-wrap: wrap;
    flex-wrap: wrap;
}
.ui-flex-row {
    padding: 0 5px;
    margin-bottom: 10px;
}
.ui-flex-row> [class*=ui-flex-col-] {
    margin: 0 1.5% 0.625rem 1.5%;
}
.ui-flex-col-33 {
    width: 30.3%;
}
.ui-flex-row .placeholder {
    padding: 0 10px;
    background-color: #ddd;
    font-size: 0.875rem;
    line-height: 2.4;
    text-align: center;
    color: #bbb;
}

Answer 5

At the end, put a few empty tags with a height of 0 and elements as wide as your row

<p class="row">
  <p class="col">1</p>
  <p class="col">2</p>
  <p class="col">3</p>
  <p class="col">4</p>
  <p class="col">5</p>
  <p class="fix"></p>
  <p class="fix"></p>
</p>

.row{
  display: flex;
  justify-content:space-between;
  flex-flow:row wrap;
  background: red;
}
.col{
  box-sizing: border-box; 
  width: 30.333333%;
  background:#eee;
  height: 120px;
  margin:10px 0;
}
.fix {
  width: 30.333333%;
  height:0;
  margin: 0;
}