styles CSS
@import url('https://fonts.googleapis.com/css2?family=Anton&display=swap');
- {
  margin: 0;
  border: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Anton" , sans-serif;
}
 
body{
     background:grey;
     background-repeat: no-repeat;
     min-height: 100vh;
     min-width: 100vh;
     display: flex;
     align-items: center;
     justify-content: center;
}
main{
    display: flex;
    width: 100vw;
    height: 100vh;
    justify-content: center;
    align-items: center;
}
.container{
     display: flex;
     flex-direction: column;
     background:linear-gradient(45deg, #292031, #9b89be);
     width: 400px;
     height: 600px;
     align-items: center;
     justify-content: space-evenly;
     border-radius: 20px;
     box-shadow: 0 0 10px black;
}
.title {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 50px;
    font: "Anton" , sans-serif ;
    border-bottom: solid 5px black;
    margin-bottom: 20px;
}
.input{
    display: flex;
    width: 300px;
    height: 50px;
    justify-content: space-between;
    align-items: center;
}
.input input{
   width: 200px;
   height: 50px;
   border-radius: 5px;
   border: none;
   outline: 0;
   font: "Anton" , sans-serif;
   text-align: center; 
}
.input label{
    font: "Anton" , sans-serif;
}
button{
    width: 300px;
    height: 40px;
    font: "Anton" , sans-serif;
    background:#000;
    color: white;
    outline: none;
    border-radius: 5px;
    cursor: pointer;
}
.result{
    display: flex;
    margin-top: 20px;
    align-items: center;
    width: 300px;
    height: 150px;
    border-radius: 5px;
    font: "Anton" , sans-serif ;
    box-shadow: 0px 0px 10px black;
    color: white ;
    padding: 20px;
    box-sizing: border-box;
    user-select: none;
}