body {
    text-align: center;
    font-family: saria, Arial, Helvetica, sans-serif;
 
  background: linear-gradient(to bottom, #a2d4f7, #083c7d);
  background-repeat: no-repeat;
  min-height: 100vh;
}
p, form,label , button,input {
    font-size: 2em;
}
h1 {
  font-size: 8em;
  border: 5px solid black;
  border-radius: 20px;
  background-color: aqua;
  color:white;
  width: fit-content;
  text-align: center;
  margin: 1em auto;
}
#output {
    font-size: 3em
}
button {
    border: 4px solid black;
    background-color: lightskyblue;
    border-radius: 20px;
}
button:active {
    background-color: lightseagreen;
}
input {
   margin-top: 30px;
    margin-bottom: 30px;
}