.container {
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.box {
  border: 5px solid rgb(58, 217, 238);
  width: 40vw;
  height: 70vh;
  border-radius: 10px;
  /* background-color: rgb(29, 28, 28); */
  /* color: white; */
}
h1,
h2,
p {
  text-align: center;
  /* color: rgb(20, 207, 198); */
  text-transform: uppercase;
}
.myform {
  text-align: center;
}

label {
  border-radius: 50px;
  text-align: center;
  padding: 10px;
  margin: 15px;
}
input {
  margin: 20px;
  text-align: center;
}
input,
button,
select,
label {
  /* background-color: rgb(29, 28, 28); */
  /* color: white; */
  border: 2px solid rgb(42, 165, 159);
}
.num1 {
  height: 30px;
  padding: 7px;
  width: 250px;
  border-radius: 50px;
}
select {
  /* width: 50px; */
  height: 50px;
  border-radius: 10px;
}
.button {
  height: 50px;
  border-radius: 10px;
  padding: 5px;
  margin: 0px;
}
.button:hover {
  background-color: rgb(42, 165, 159);
}
#result {
  margin-left: 93px;
}

@media screen and (max-width: 1400px) {
  .box {
    width: 90vw;
    height: 90vh;
  }
}
@media screen and (max-width: 435px) {
  input {
    margin-left: 2px;
  }
  .box {
    width: 95vw;
    height: 95vh;
  }
}
@media screen and (max-width: 420px) {
  h1,
  h2 {
    text-align: center;
    font-size: 20px;
  }
  label {
    display: none;
  }
  #result {
    margin-left: 0px;
  }
}