.oteviracka {
  padding: 0rem;
  margin: 0 auto;
  min-width: 20rem;
  max-width: 48rem;
  min-height: 100%;
}

.oteviracka_obrazek {
  display: block;
  width: calc(100% - 4rem);
  border-radius: 0.5rem;
  border: solid #ababab 0.3rem;
  margin: auto;
}

.box {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  padding: 0 1rem;
}

.sloupec {
  font-size: 1.5rem;
  text-align: center;
  padding: 2rem 0;
}

@media only screen and (min-width: 900px) {
  .oteviracka_obrazek {
    margin-bottom: 0rem;
  }

  .sloupec {
    padding: 6rem 0;
  }
}