body{
  display: flex;
  min-height: 90vh;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: darkcyan;
  overscroll-behavior: none;
  overflow: scroll;
  
}
h1{
  color: aliceblue;
  margin-bottom: 100px;
  background-color: rgba(31, 116, 62, 0.51);
  border-radius: 10px;
  padding: 20px;
  box-shadow: 5px 6px 10px rgba(0, 0, 0, 0.736);

}
*{
  margin: 0;
  padding: 0;
  font-family: sans-serif;
}

.calculator{
  background-color: rgba(0, 0, 0, 0.463);
  color: aliceblue;
  display: flex;
  padding: 10px;
  border-radius: 10px;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  box-shadow: 5px 6px 10px rgba(0, 0, 0, 0.736);
}

.buttons{
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
}
.opt{
  display: flex;
  flex-direction: row;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  width: 120px;
}
.num{
  display: flex;
  flex-direction: row;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  width: 200px;
}

button{
  background-color: rgb(0, 0, 0);
  color: aliceblue;
  text-shadow: 3px 3px 20px rgb(55, 248, 255);
  padding: 10px;
  font-size: larger;
  font-weight: bold;
  border: none;
  border-radius: 10px;
  width: 50px;
  margin: 5px;
}

input{
  padding: 10px;
  font-size: medium;
  font-weight: bold;
  border: none;
  border-radius: 10px;
  width: 90%;
  margin: 5px;
  background-color: rgb(151, 255, 198);
  color: black;

}

button:active{
  scale: .95;
}

@media (max-width:350px) {
 button{
  font-size: small;
 }
  
}