body {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgb(245 245 245 / 65%);
}

#container {
  font-family: "Oswald", sans-serif;
  display: grid;
  grid-template-columns: 4fr;
  background-color: beige;
  margin: 0;
  max-width: 485px;
  border: darkcyan 1px solid;
  padding: 1px;
  border-radius: 6px;
  -webkit-box-shadow: 4px 4px 8px -1px rgba(0, 0, 0, 0.75);
  -moz-box-shadow: 4px 4px 8px -1px rgba(0, 0, 0, 0.75);
  box-shadow: 4px 4px 8px -1px rgba(0, 0, 0, 0.75);
}

h1 {
  padding-inline-start: 0.2em;
  color: darkcyan;
  font-size: 4em;
  margin: 0;
  background-color: white;
  border-bottom: darkcyan 1px solid;
}

h4 {
    margin: 0.4em 0 0.2em 0;
    color: rgb(82 82 82);
    font-weight: 500;
}

h3 {
    padding: 1em;
    border-top: darkcyan 1px solid;
    color: #333;
    margin: 0;
}


#info {
    font-family: "Dosis", sans-serif;
    margin: 0.4em;
    padding-left: 0.4em;
    font-size: smaller;
    color: rgb(125 125 125);
}

#operadores {
  padding: 16px;
}

#pantalla {
  font-family: "Dosis", sans-serif;
  font-weight: 400;
  font-size: xxx-large;
  padding-inline-start: 0.3em;
  background-color: darkcyan;
  color: white;
  border: none;
}

.botones_3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-gap: 0.5em;
    margin-bottom: 1em;
}

.botones_4 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    grid-gap: 0.5em;
    margin-bottom: 0.5em;
}

.botones_binarias {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    grid-gap: 0.5em;
    margin-bottom: 0.5em;
    font-size: x-large;
}

#igual {
    width: 100%;
    margin-bottom: 1em;
    font-size: x-large;
}

button {
    background-color: darkkhaki;
    font-family: 'Oswald';
    font-weight: 600;
    font-size: 1em;
    border: none;
    border-radius: 2px;
    color: #272401;
    -webkit-box-shadow: 4px 4px 8px -1px rgba(0, 0, 0, 0.75);
    -moz-box-shadow: 4px 4px 8px -1px rgba(0, 0, 0, 0.75);
    box-shadow: 2px 2px 4px 0px rgba(0, 0, 0, 0.75);
    height: 42px;
}