<div class="cities">
  <div class="city">Стамбул</div>
  <div class="city">Анкара</div>
  <div class="city">Измир</div>
  <div class="city">Бурса</div>
  <div class="city">Адана</div>
  <div class="city">Кайсери</div>
  <div class="city">Эскишехир</div>
  <div class="city">Денизли</div>
  <div class="city">Самсун</div>
  <div class="city">Эсеньюрт</div>
  <div class="city">Адапазары</div>
  <div class="city">Измит</div>
</div>

.city {
  font-size: 20px;
  font-weight: bold;
  font-family: sans-serif;
  background: red;
  border-radius: 100px;
  color: #fff;
  padding: 0.5em 1em;
}
.city:nth-child(5) ~ .city { font-size: 16px; }

.cities {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  border: 1px solid black;
  width: 610px;
}

.city { order: 1; }
.city:nth-child(5) ~ .city { order: 3; }
.city:nth-child(9) ~ .city { order: 5; }

.cities::before,
.cities::after {
  content: '';
}

.cities::before { order: 2; }
.cities::after { order: 4; }