._roundcheck {
  --size: 1.2rem;
}

._roundcheck input {
  opacity: 0;
}

._roundcheck label {
  position: relative;
  margin-left: -1.5rem;
}

._roundcheck label::before {
  content: "";
  position: absolute;
  top: calc(var(--size) / -3);
  left: calc(var(--size) / -3);
  width: var(--size);
  height: var(--size);
  background-color: var(--bs-white);
  border: 0.1rem solid var(--bs-gray-400);
  border-radius: 100%;
}

._roundcheck input:checked ~ label::before {
  background-color: var(--bs-primary);
  border: none;
}

._roundcheck input:checked ~ label::after {
  content: "";
  position: absolute;
  top: calc(var(--size) / -3.5);
  left: calc(var(--size) / -4);
  width: calc(var(--size) / 1.5);
  height: calc(var(--size) / 2);
  border-bottom: 0.125rem solid var(--bs-white);
  border-left: 0.125rem solid var(--bs-white);
  border-radius: 10%;
  transform: rotate(-45deg);
}