:root {
    --background-dark: #5eead4;
    --black: #000;
  }
  
  html {
    background-color: var(--background-dark);
    color: var(--black);
    height: 100%;
  }
  
  * {
    font-family: 'Montserrat', sans-serif;
    font-family: 'Permanent Marker', cursive;  }


.header {
        text-align: center;
        margin-top: 100px;
 }


  .container {
    width: 300px;
    margin: auto auto;
  }
  

label,
input {
  display: block;
  margin-top: 0.5rem;
  width: 100%;
}

label {
  font-weight: 500;
  font-size: 1.3rem;
}

input {
  border-radius: 5px;
  padding: 0.5rem;
  border: transparent;
  font-size: large;
  margin: 1rem 0;
}

#check-button {
  margin: 0.5rem auto;
  display: block;
}


#check-button{
    background-color: var(--background-dark);
    border: 2px solid var(--black);
    color: var(--black);
    padding: 0.4rem 1rem;
    border-radius: 0.5rem;
    font-size: large;
    cursor: pointer;
    outline: var(--black);
    margin: auto;
    display: block;
  }
  
  #output{
    display: block;
    margin: auto;
    margin-top: 1rem;
    width: 100%;
    text-align: center;
    padding: 0.5rem;
    font-size: x-large;
    border-color: var(--black);
    border-width: medium;
    border-radius: 5px;
  }




  /* footer */
  
  footer {
    text-align: center;
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
  }
  
  footer p {
    font-size: large;
    text-align: center;
  }
  
  .footer-list {
    margin: 1rem;
  }
  
  a,
  img,
  li {
    display: inline;
  }
  
  img {
    width: 40px;
    padding: 0.2rem;
  }