How to right align grid elements

Question

I have a fixed number of columns in a CSS Grid layout and have elements to be placed in these columns. The number of elements to be placed is less than the number of columns.

I want the columns to be aligned to the right, in the order the elements were added. In the following code, there are 4 elements aligned to the left with 6 empty elements to the right:

<code>.hello {
  border-style: solid;
  border-color: blue;
}

.container {
  display: grid;
  grid-gap: 5px;
  grid-template-columns: repeat(10, 5rem);
}</code>

<code><div class="container">
  <div class="hello">1</div>
  <div class="hello">2</div>
  <div class="hello">3</div>
  <div class="hello">4</div>
</div></code>

I want to change the layout above to:

empty empty empty empty empty empty 1 2 3 4

I tried various combinations of [align,justify]-[content,items], but none of them achieved the effect of right alignment. Can CSS Grid achieve this?

Answer 1

Due to the limited number, you can define them manually

.hello {
  border-style: solid;
  border-color: blue;
}

.container {
  display: grid;
  gap: 5px;
  grid-template-columns: repeat(10, 3rem);
  margin: 5px;
}

.container > :nth-last-child(1) {grid-column-end: -1}
.container > :nth-last-child(2) {grid-column-end: -2}
.container > :nth-last-child(3) {grid-column-end: -3}
.container > :nth-last-child(4) {grid-column-end: -4}
.container > :nth-last-child(5) {grid-column-end: -5}
.container > :nth-last-child(6) {grid-column-end: -6}
.container > :nth-last-child(7) {grid-column-end: -7}
.container > :nth-last-child(8) {grid-column-end: -8}
.container > :nth-last-child(9) {grid-column-end: -9}

<div class="container">
  <div class="hello">1</div>
  <div class="hello">2</div>
  <div class="hello">3</div>
  <div class="hello">4</div>
</div>

<div class="container">
  <div class="hello">1</div>
  <div class="hello">2</div>
  <div class="hello">3</div>
</div>

<div class="container">
  <div class="hello">1</div>
  <div class="hello">2</div>
  <div class="hello">3</div>
  <div class="hello">4</div>
  <div class="hello">5</div>
  <div class="hello">6</div>
</div>

But it’s better to use flexbox:

.hello {
  border-style: solid;
  border-color: blue;
  width: 3rem;
}

.container {
  display: flex;
  gap: 5px;
  width: calc(10*3rem + 9*5px);
  margin: 5px;
}

.container > :first-child {margin-left:auto}

<div class="container">
  <div class="hello">1</div>
  <div class="hello">2</div>
  <div class="hello">3</div>
  <div class="hello">4</div>
</div>

<div class="container">
  <div class="hello">1</div>
  <div class="hello">2</div>
  <div class="hello">3</div>
</div>

<div class="container">
  <div class="hello">1</div>
  <div class="hello">2</div>
  <div class="hello">3</div>
  <div class="hello">4</div>
  <div class="hello">5</div>
  <div class="hello">6</div>
</div>