.calcu{

  display: block;
  margin: 0 auto;
  padding: 20px;
  background-color: rgb(10,120,70);
  width: 300px;
  height: 500px;
  border-radius: 25px;
}
.calcu td button{
  display: inline-block;
  font-style: italic;
  width: 70px;
  height: 70px;
  font-size: 25px;
  font-family:monospaces;
  color: black;
  background-color: white;

}

#resultado{

  display:grid;
  text-align: right;
  font-size: 40px;
  margin-bottom: 50px;
  width: 300px;
  height: 100px;
  line-height: 100px;
  background-color: white;
  border-radius: 25px;
  overflow-y: scroll;


}