.next {
    float: right;
    margin: 40px auto;
    }


.back{
    float: left;
    margin: 40px auto;
    }


.page-header {
    margin: 0px 0 5px;
    padding: 0;
    border-bottom: none;
    text-align: center;
}

p{
    text-align: justify;
    text-justify: inter-word;
}


.nav {
    visibility: hidden;
}

.round-header {
  text-align: center;
  font-weight: 700;
  font-size: 1em;
  color: var(--accent, #333);
  margin: 1rem 0 1.5rem 0;
  letter-spacing: 0.5px;
}

.round-header span {
  display: inline-block;
  background: var(--surface, #f3f3f3);
  padding: 0.3em 1em;
  border-radius: var(--radius, 8px);
  box-shadow: var(--shadow, 0 2px 5px rgba(0,0,0,0.1));
}
.round-floating {
  position: fixed;
  right: 1.5rem;        /* distance from the right edge */
  top: 20%;             /* vertically centered */
  transform: translateY(-50%);
  font-size: 0.9rem;
  font-weight: 600;
  color: #444;
  background: rgba(255,255,255,0.8);
  padding: 0.25em 0.7em;
  border-radius: 6px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  pointer-events: none; /* avoids interfering with clicks */
  z-index: 2000;        /* ensures it stays visible */
}