body {
  font-family: 'Arial', monospace;
  background-color: #fffef8;
  color: #1a1a1a;
  max-width: 700px;
  margin: 0 auto;
  padding: 2em;
  line-height: 1.6;
  text-align: center;
}

h1 {
  font-size: 2em;
  margin-bottom: 0.2em;
  text-align: center;
}

.subtitle {
  font-size: 1.1em;
  font-style: italic;
  margin-top: 0.2em;
  margin-bottom: 2em;
  /* text-align: justify; */
  color: #555;
}

input[type="text"], button {
  font-family: inherit;
  font-size: 1em;
  padding: 0.5em;
  margin-top: 0.5em;
  text-align: center;
  width: fit-content
}

#message {
  margin-top: 1em;
  font-weight: bold;
  text-align: center;
  font-size: 1.5em;
}

@media (max-width: 600px){
.bordered-text {
  border: 1px solid #000;
  padding: 10px;
  display: inline-block;
  width: 40px;
  height: 40px;
  text-align: center;
  font-weight: bold;
  font-size: 30px;
}

.bordered-text-spl {
  border: 1px solid #000;
  padding: 10px;
  display: inline-block;
  width: 40px;
  height: 40px;
  text-align: center;
  font-weight: bold;
  font-size: 30px;
  background-color:aqua;
}
}

@media (min-width: 601px) {
.bordered-text {
  border: 1px solid #000;
  padding: 10px;
  display: inline-block;
  width: 50px;
  height: 50px;
  text-align: center;
  font-weight: bold;
  font-size: 30px;
}

.bordered-text-spl {
  border: 1px solid #000;
  padding: 10px;
  display: inline-block;
  width: 50px;
  height: 50px;
  text-align: center;
  font-weight: bold;
  font-size: 30px;
  background-color: aqua;
}
}

.horizontalgap {
  overflow: hidden;
  width: 10px;
  display: inline-block;
}