style.css

body { font-family: 'Patua One', cursive; }
#calendar { text-align:center; }
#calendar .row { padding:5px; }
select { font-size:16px; line-height:24px; padding:5px; }

.c-logo {
  font-family: 'Courgette', cursive;
  font-size: 1.625rem;
  margin: 0;
  text-decoration: none;
  padding: 1.00rem;
}

.c-logo__link {
  color: var(--black);
  text-decoration: none;
}

.c-main-menu {
  font-weight: 500;
}

.c-main-menu__list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.c-main-menu__link {
  color: var(--black);
  display: inline-block;
  font-size: 0.875rem;
  letter-spacing: 0.25rem;
  margin: 0 0.375rem;
  padding: 0.625rem;
  text-decoration: none;
  text-transform: uppercase;
}

.o-header {
  align-items: center;
  display: flex;
  justify-content: space-between;
  padding: 1.25rem;
}

.o-page {
  max-width: 100%;
  overflow-x: hidden;
  width: 100%;
}

.u-visually-hidden {
  clip: rect(1px, 1px, 1px, 1px);
  -webkit-clip-path: inset(50%);
          clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
}