Fractional units fr in CSS grids

Values ​​specified in units of fr can take fractional form. Let's modify the previous example by specifying the width of the second and third columns in fractional numbers:

html<div id="parent">
  <div>1</div>
  <div>2</div>
  <div>3</div>
  <div>4</div>
  <div>5</div>
  <div>6</div>
  <div>7</div>
  <div>8</div>
  <div>9</div>
</div>

css#parent {
  display: grid;
  grid-template-columns: 1fr 0.5fr 2.5fr;
  border: 2px solid #696989;
  padding: 10px;
  width: 600px;
}
#parent > div {
  padding: 10px;
  border: 1px solid #696989;
}

Результат: