body {
  font-family: Arial, sans-serif;
  text-align: center;
  margin: 20px;
}

h1 {
  font-size: 28px;
}

#sequence-container {
  display: inline-block;
  text-align: left;
  font-family: monospace;
  margin-bottom: 50px;
  max-width: 90%;
}

.sequence-line {
  display: block;
  margin-bottom: 10px;
}

.sequence-numbers, .sequence-letters {
  display: flex;
}

.sequence-numbers span {
  width: 60px;
  text-align: center;
  margin-top: 30px;
  font-size: 25px;
}

.sequence-letters span {
  width: 60px;
  text-align: center;
  font-size: 40px;
}

.highlight {
  color: red;
}

#dna-input {
  width: 400px;
  padding: 5px;
  font-size: 18px;
}

#input-string {
  width: 150px;
  padding: 5px;
  font-size: 18px;
}

#search-button, #submit-dna-button {
  padding: 5px 10px;
  font-size: 18px;
  margin-top: 5px;
}