grid items should flow across rows, not columns

问题

I have a grid that contains 7 dynamically sized divs surrounded by 2 blocks that should align with the 2nd row of the 7 dynamic div grid.

I have it mostly working, except that the grid is orientated as columns and I want it to be rows. See fiddle, 1-7 should go across the top https://jsfiddle.net/juzkxo20/5/

<div class='content'>
  <div class='left'></div>
  <div class='column-with-dynamic-content'>
    <div class='dynamic'>1</div>
    <div class='dynamic'></div>
    <div class='dynamic'></div>    
  </div>
  <div class='column-with-dynamic-content'>
    <div class='dynamic'>2</div>
    <div class='dynamic'></div>
  </div>
    <div class='column-with-dynamic-content'>
    <div class='dynamic'>3</div>
    <div class='dynamic'></div>
    <div class='dynamic'></div>    
  </div>
  <div class='column-with-dynamic-content'>
    <div class='dynamic'>4</div>
    <div class='dynamic'></div>
  </div>
    <div class='column-with-dynamic-content'>
    <div class='dynamic'>5</div>
    <div class='dynamic'></div>
    <div class='dynamic'></div>    
  </div>
  <div class='column-with-dynamic-content'>
    <div class='dynamic'>6</div>
    <div class='dynamic'></div>
  </div>
    <div class='column-with-dynamic-content'>
    <div class='dynamic'>7</div>
    <div class='dynamic'></div>
  </div>
  <div class='right'></div>
</div>

.content {
  display: grid;
  grid-template-columns: 1fr 7fr 1fr;
  grid-auto-rows: 50px;  
  grid-gap: 10px;
grid-auto-flow: column;
}

.column-with-dynamic-content {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-auto-rows: 50px;
  grid-gap: 10px;
  grid-column: 2 / 3;
}

.left {
  grid-column-start: 1;
  grid-row: 2 / 3 ;
}

.right {
  grid-column-end: -1;
  grid-row: 2 / 3 ;
}

/* just demo styles */
.left, .right { border: 2px solid red; }
.dynamic { background-color: lightgray;  border: 1px solid gray; }

回答1:

Here is one way to solve your problem, I'm just now learning css grid, however I think most of this is correct.

You're .column-with-dynamic-content is creating a template with 7 columns, however, you only have 3 child divs inside of this container, it's looking for 7. You need this class to contain all 7 parent divs that contain the dynamic divs. I created a class below to show you.

.content {
  display: grid;
  grid-template-columns: 1fr 7fr 1fr;
  grid-auto-rows: 50px;
  grid-gap: 10px;
  grid-auto-flow: column;
}

.column-with-dynamic-content {
  display: grid;
  grid-auto-rows: 50px;
  grid-gap: 10px;
}

.seven-children-column {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-auto-rows: 50px;
  grid-gap: 10px;
  grid-column: 2 / 3;
}

.left {
  grid-column-start: 1;
  grid-row: 2 / 3;
}

.right {
  grid-column-end: -1;
  grid-row: 2 / 3;
}


/* just demo styles */

.left,
.right {
  border: 2px solid red;
}

.dynamic {
  background-color: lightgray;
  border: 1px solid gray;
}

<div class='content'>
  <div class='left'></div>
  <div class='seven-children-column'>
    <div class='column-with-dynamic-content'>
      <div class='dynamic'>1</div>
      <div class='dynamic'></div>
      <div class='dynamic'></div>
    </div>
    <div class='column-with-dynamic-content'>
      <div class='dynamic'>2</div>
      <div class='dynamic'></div>
    </div>
    <div class='column-with-dynamic-content'>
      <div class='dynamic'>3</div>
      <div class='dynamic'></div>
      <div class='dynamic'></div>
    </div>
    <div class='column-with-dynamic-content'>
      <div class='dynamic'>4</div>
      <div class='dynamic'></div>
    </div>
    <div class='column-with-dynamic-content'>
      <div class='dynamic'>5</div>
      <div class='dynamic'></div>
      <div class='dynamic'></div>
    </div>
    <div class='column-with-dynamic-content'>
      <div class='dynamic'>6</div>
      <div class='dynamic'></div>
    </div>
    <div class='column-with-dynamic-content'>
      <div class='dynamic'>7</div>
      <div class='dynamic'></div>
    </div>
  </div>
  <div class='right'></div>
</div>

回答2:

Grid provides line-based placement, which allows you to define the size and location of grid items.

.content, 
.column-with-dynamic-content {
  display: grid;
  grid-auto-rows: 50px;  
  grid-gap: 10px;
}

.content > div:nth-child(1) { grid-column: 1 / 2;  grid-row: 2 / 3; }
.content > div:nth-child(2) { grid-column: 2 / 3; }
.content > div:nth-child(3) { grid-column: 3 / 4; }
.content > div:nth-child(4) { grid-column: 4 / 5; }
.content > div:nth-child(5) { grid-column: 5 / 6; }
.content > div:nth-child(6) { grid-column: 6 / 7; }
.content > div:nth-child(7) { grid-column: 7 / 8; }
.content > div:nth-child(8) { grid-column: 8 / 9; }
.content > div:nth-child(9) { grid-column: 9 / 10; grid-row: 2 / 3; }

/* just demo styles */
.left, .right { border: 2px solid red; }
.dynamic { background-color: lightgray;  border: 1px solid gray; }

<div class='content'>
  <div class='left'></div>
  <div class='column-with-dynamic-content'>
    <div class='dynamic'>1</div>
    <div class='dynamic'></div>
    <div class='dynamic'></div>    
  </div>
  <div class='column-with-dynamic-content'>
    <div class='dynamic'>2</div>
    <div class='dynamic'></div>
  </div>
    <div class='column-with-dynamic-content'>
    <div class='dynamic'>3</div>
    <div class='dynamic'></div>
    <div class='dynamic'></div>    
  </div>
  <div class='column-with-dynamic-content'>
    <div class='dynamic'>4</div>
    <div class='dynamic'></div>
  </div>
    <div class='column-with-dynamic-content'>
    <div class='dynamic'>5</div>
    <div class='dynamic'></div>
    <div class='dynamic'></div>    
  </div>
  <div class='column-with-dynamic-content'>
    <div class='dynamic'>6</div>
    <div class='dynamic'></div>
  </div>
    <div class='column-with-dynamic-content'>
    <div class='dynamic'>7</div>
    <div class='dynamic'></div>
  </div>
  <div class='right'></div>
</div>

jsFiddle demo

来源：https://stackoverflow.com/questions/47229684/grid-items-should-flow-across-rows-not-columns

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