.main{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.calculator{
    height:600px;
    width:400px;
    background-color: #4f6367;
    border-radius: 20px 20px 40px 40px;
    box-shadow: 5px 5px 6px black;
}
#screen{
    width: 200px;
    height:30px;
    margin-left:100px;
    margin-top: 25px;
    pointer-events: none;
}
.btn{
    width: 60px;
    height: 45px;
    margin-top: 30px;
    margin-left: 30px;
    background-color:#abe6ce;
    border-radius: 5px 5px 25px 25px;
    transition: 0.3s ease;
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
    font-size: 1.2rem;
    border-color: black;
    
}
.btn:hover{
    background-color: #ff8c94; 
}
input{
    background-color:#abe6ce;
    text-transform: uppercase;
}
h1{
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    color:#4f6367;
}