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Control item count in a row with flexbox

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长发绾君心
长发绾君心 2021-01-14 06:00

I want to show 4 items in 1st row as it is, but only 3 in second line, and then 4 in 3rd line and 3 in 4th line and so on...

I have achieved this by nth-child<

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2条回答
  • 爱一瞬间的悲伤
    2021-01-14 06:24

    You only need to consider one rule like below:

     /*7 = 4 (1st row) + 3 (2nd row) and 5 = 1st element in 2nd row (4 + 1)*/
.grid-wrapper .grid-item:nth-child(7n + 5) {
  width: calc(100%/3);
  flex-grow:0;
}

    The trick is to make one element bigger to trigger the wrap then rely on flex-grow to fill the space.

    Full code

    * {
  box-sizing: border-box;
}

.grid-wrapper {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.grid-wrapper .grid-item {
  width: 25%;
  text-align: center;
  padding: 5px;
  flex-grow: 1;
}

.grid-wrapper .grid-item:nth-child(7n + 5) {
  width: calc(100%/3);
  flex-grow:0;
}

p {
  background: #ffffd;
  padding: 15px;
}
    <div class="grid-wrapper">
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div><div class="grid-item">
    <p>Grid Item</p>
  </div>
</div>

    0 讨论(0)
  • 伪装坚强ぢ
    2021-01-14 06:30

    Is it possible by flex? or grid?

    Here is a solution using grid which is easier to construct:

    • consider a 12-column grid layout using grid-template-columns: repeat(12, 1fr),

    • place each grid-item into 4 columns by using grid-column: span 3,

    • 7 grid-items are repeating in a pattern; which means every even row has 3 items with nth-child indices 7n, 7n - 1 and 7n - 2.

    See demo below:

    * {
  box-sizing: border-box;
}

.grid-wrapper {
  display: grid; /* grid container */
  grid-template-columns: repeat(12, 1fr); /* 12-column layout */
}

.grid-wrapper .grid-item {
  text-align: center;
  padding: 5px;
  grid-column: span 3; /* 4 items in a row */
}

.grid-wrapper .grid-item:nth-child(7n - 2),
.grid-wrapper .grid-item:nth-child(7n - 1),
.grid-wrapper .grid-item:nth-child(7n) { /* even row */
  grid-column: span 4; /* 3 items in the even row */
}

p {
  background: #ffffd;
  padding: 15px;
}
    <div class="grid-wrapper">
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>


</div>

    Flexbox solution

    And I'd use just about the same nth-child logic in the case of a flexbox and the only change in your code would be the below:

    .grid-wrapper .grid-item:nth-child(7n - 2),
.grid-wrapper .grid-item:nth-child(7n - 1),
.grid-wrapper .grid-item:nth-child(7n) { /* even row */
  width: 33.33%;
}

    See demo below:

    * {
  box-sizing: border-box;
}

.grid-wrapper {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.grid-wrapper .grid-item {
  width: 25%;
  text-align: center;
  padding: 5px;
}

p {
  background: #ffffd;
  padding: 15px;
}

/* ADDED THESE */
.grid-wrapper .grid-item:nth-child(7n - 2),
.grid-wrapper .grid-item:nth-child(7n - 1),
.grid-wrapper .grid-item:nth-child(7n) { /* even row */
  width: 33.33%;
}
    <div class="grid-wrapper">
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>
  <div class="grid-item">
    <p>Grid Item</p>
  </div>


</div>

    On a separate note, if you interested in having n items in a row with flexboxes, the below answers may give you more information:

    • 5 items per row, auto-resize items in flexbox
    • How to start a new line with a particular item with Flexbox?
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