CSSda plitochka uchun vertikal joy tashlash

Keling, endi vertikal joy tashlashni ham qo'shamiz. Buning uchun barcha voris elementlarga margin-bottom xususiyatini 10px qiymatida belgilaymiz:

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

css.parent {
  display: flex;
  flex-wrap: wrap;
  width: 320px;
  border: 1px solid red;
}
.child {
  box-sizing: border-box;
  width: 100px;
  height: 100px;
  margin-right: 10px;
  margin-bottom: 10px;
  border: 1px solid green;
}
.child:nth-child(3n) {
  margin-right: 0;
}

Результат:

Ko'rib turganimizdek, hamma narsa yaxshi ishlaydi, faqat oxirgi qator ota-ona elementdan joy olgani bundan mustasno. Ko'pincha bu muhim emas.