*,
*::after,
*::before {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  overflow: hidden;
  background-color: rgb(187, 187, 255);
}


.container {
  width: 450px;
  min-height: 250px;
  display: flex;
  flex-direction: column;
  justify-content: start;
  align-items: center;
  padding: 20px;
  border-radius: 8px;
  gap: 10px;
  background-color: rgb(59, 137, 255);
  box-shadow: 1px 2px 7px rgb(28, 77, 151);
  margin: 10px;
}

.container .description {
  width: 100%;
  font-size: 1.1rem;
  font-weight: 600;
  color: white;
  margin: 10px;
}

.container .input-word {
  margin-top: 15px;
  width: calc(100% - 20px);
  height: 28px;
  font-size: 1rem;
  border: none;
  border-radius: 4px;
  padding: 2px 5px;
  background-color: rgb(199, 222, 255);
}


.container .btn-check-palindrome {
  margin-top: 10px;
  padding: 6px 20px;
  font-size: 14px;
  background-color: rgb(255, 255, 255);
  color: rgb(0, 0, 0);
  font-weight: bold;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: all .3s ease;
  -webkit-transition: all .3s ease;
  -moz-transition: all .3s ease;
  -ms-transition: all .3s ease;
  -o-transition: all .3s ease;
}

.container .btn-check-palindrome:hover {
  background-color: rgb(0, 0, 255);
  color: rgb(255, 255, 255);
}

.output {
  display: none;
  text-align: center;
  background-color: rgb(152, 41, 255);
  padding: 10px;
  border-radius: 5px;
}

.output.open {
  margin-top: 15px;
  display: block;
}