Centering Inline-Block Elements in CSS

For example, let's center inline-block elements:

html<div class="parent">
  <span class="child">text</span>
  <span class="child">text</span>
  <span class="child">text</span>
</div>

css.parent {
  text-align: center;
  padding: 10px 0;
  border: 1px solid red;
}
.child {
  display: inline-block;
  padding: 10px 20px;
  border: 1px solid green;
}

Результат:

Задание 1

Given divs inside some parent:

html<div class="parent">
  <div class="child">text 1</div>
  <div class="child">text 2</div>
  <div class="child">text 3</div>
</div>

css.parent {
  padding: 10px 0;
  border: 1px solid red;
}
.child {
  padding: 10px;
  border: 1px solid green;
}

Convert the child divs to inline-block elements, give them a horizontal margin of 5px, and then center them horizontally relative to their parent.