@import url('https://fonts.googleapis.com/css2?family=Azeret+Mono&display=swap');

*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Azeret Mono', monospace; 
  text-align: center;
}

body{
  font-size: 3.5vmin;
  display: flex;
  flex-direction: column;
  align-items: center;
}

@media (max-width: 1080px) {
  body{
    font-size: 3.5vmin;
  }
}

@media (max-width: 720px) {
  body{
    font-size: 4vmin;
  }
}

@media (max-width: 480px) {
  body{
    font-size: 5vmin;
  }
}

header{
  text-align: center;
  font-size: 2em;
  padding: 0.25em;
}

#given-container{
  margin: 0.25em 2em;
  line-height: 2em;
}

input{
 font-size: 1em;
 border-radius: 10px;
}

#operations-container{
  margin: 0.25em 2em;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-evenly;
}

button{
  width: 6.5em;
  height: 2em;
  font-size: 0.75em;
  margin: 0.5em;
  border-radius: 10px;
}

button:hover{
  background-color: grey;
}

button:active{
  background-color: black;
  color: white;
}

#answer-container{
  margin: 0.25em 2em;
  border: 1px solid black;
  border-radius: 10px;
  padding: 0.5em;
  background-color: black;
  color: white;
}

#answer-container:hover{
  background-color: white;
  color: black;
}

#last-container{
  margin: 0.25em 2em;
  border: 1px solid black;
  border-radius: 10px;
  padding: 0.5em;
  margin: 0.25em 2em;
}