*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    color: #fff;

}

body{
    height: 100vh;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    border: none;
    background-color: black;
}
.conatiner{
    height: 400px;
    width: 400px;
    border: 2px solid white;
    border-radius: 20px;
    box-shadow: 5px 5px 10px white , -5px -5px 10px white;
   
    

}
.upper{
    display: flex;
    padding: 20px;
    justify-content: space-between;
}
.output{
    border-top: 2px solid white;
    font-size: 30px;
    text-align: center;
    padding: 10px;
    padding-top: 50px;
}

#btn{
    padding: 10px 5px 10px 5px;
    color: black;
    border-radius: 5px;
    width:  100px;
    box-shadow: 2px 2px 10px rgb(56,56,56);
    cursor: pointer;
}
#btn:hover{
    background-color: rgb(207, 171, 241);
    color: #fff;
}