*, *::before, *::after {
  margin: 0;
  padding: 0;
}

html {
  min-width: 550px;
}

body {
  background: linear-gradient(60deg, rgba(14, 255, 219, 0.4), rgba(0, 195, 255, 0.4));
  font-size: 1.35em;
  color:rgb(0, 119, 128);
  font-family:'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
}

.container {
  display: flex;
  min-height: 100vh;
  min-width: 500px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

#main-text {
  text-align: center;
}

#check-btn {
  border: 1px solid rgba(4, 140, 120, 0.8);
  border-radius: 5px;
  background: linear-gradient(60deg, rgba(14, 255, 219, 0.4), rgba(0, 195, 255, 0.4));
  width: 100px;
  height: 28px;
}

#inp {
  margin: 15px auto;
  text-align: center;
}

#text-input {
  margin-right: 10px;
  width: 250px;
  height: 24px;
  text-align: center;
}

#result {
  margin-top: 10px;
  text-align: center;
}

#tip {
  margin-top: 10px;
  padding: 20px;
  max-width: 500px;
  text-align: center;
  font-size: 0.9em;
  border: none;
  border-radius: 15px;
  background: linear-gradient(60deg, rgba(4, 233, 199, 0.4), rgba(0, 195, 255, 0.4));
}