.counter-box {
  margin: 0 auto;
  background: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.counts {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 10px;
  font-size: 18px;
}

.counts span {
  background: #006534;
  color: white;
  padding: 6px 14px;
  border-radius: 8px;
}

textarea {
  width: 100%;
  height: 150px;
  resize: vertical;
}

.letter-density {
  text-align: left;
}

.letter-density h3 {
  margin-bottom: 10px;
  color: #333;
}

#letterList {
  list-style: none;
  padding: 0;
}

#letterList li {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  border-bottom: 1px solid #eee;
  font-size: 16px;
}

@media screen and (max-width: 475px) {
  main {
    padding-top: 20px !important;
    margin: 0 !important;
  }

  .counts{
    flex-wrap: wrap;
  }
}