html {
    -moz-osx-font-smoothing: grayscale;
    -webkit-font-smoothing: antialiased;
    box-sizing: border-box;
  }
  html * {
    box-sizing: inherit;
  }
  
  body {
    background-color: #A9DDEB;
    display: grid;
    font-family: Helvetica, sans-serif;
    font-size: 1.6rem;
    min-height: 100vh;
    place-content: center;
  }
  
  .calendar {
    backdrop-filter: blur(2px) brightness(110%);
    border-radius: 0.8rem;
    box-shadow: 0 0.8rem 1.6rem rgb(0 0 0 / 49%);
    padding: 0.5em;
    width: 15rem;
  }
  .calendar__header {
    font-weight: bold;
    display: flex;
    justify-content: space-between;
    letter-spacing: 0.2rem;
    padding: 0 0.4rem 1.2rem;
    text-transform: uppercase;
  }
  .calendar__day-names {
    border-bottom: 0.1rem solid #828889;
    display: flex;
    gap: 0.2rem;
    margin-bottom: 0.8rem;
  }
  .calendar__day-name {
    aspect-ratio: 1;
    color: #828889;
    font-weight: normal;
    text-align: center;
    width: 2.4rem;
  }
  .calendar__day_numbers {
    display: flex;
    flex-direction: column;
  }
  .calendar__day-numbers-row {
    display: flex;
    gap: 0.2rem;
  }
  .calendar__day-numbers-row:first-child {
    justify-content: flex-end;
  }
  .calendar__day-number {
    align-content: center;
    justify-content: center;
    aspect-ratio: 1;
    color: #000;
    display: flex;
    line-height: 1.4;
    text-align: center;
    width: 1.9rem;
  }
  .calendar__day-number--current {
    background-color: #fc0000ba;
    border-radius: 50%;
    color: #000000;
  }