body{
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: white;
    background-image: url(./calc.jpg);
    
}

.container{
    width: 45%;
    height: 50vh;
    padding: 10px;
    border-radius: 8px;
    background-color: rgb(119, 113, 113);
    box-shadow: 12px 12px 20px rgb(231, 222, 222);
    box-shadow: 12px 12px 20px rgb(190, 162, 162);
    
}

.display #screen{
    width: 97%;
    height: 70px;
    font-size: 35px;
    outline: none;
    border:none;
    text-align: right;
    padding-right:.5em;
    background: #ecf0f3;
    border-radius: 6px;
    box-shadow: inset 18px 18px 18px white;
    box-shadow: inset -8px -8px 8px #ffffff;
}

.btns{
    width: 100%;
    margin-top: 1.7em;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    

}

.btns .row button{
    width: 80px;
    height: 30px;
    font-size: 15px;
    border: none;
    outline: none;
    margin: 5px;
    border-radius: 4px;
    box-shadow: 5px 5px 8px #00000020;
    box-shadow: -5px -5px 8px #ffffff;
    transition: .1s;
    
}

.btns .row button:hover{
    box-shadow: inset 5px 5px 8px rgba(16,16 16 .1);
    box-shadow: inset -5px -5px 8px #fff;
    background:#fff;
        
}

#eval{
    background: rgb(84, 180, 218);
    color: white !important ;
    box-shadow: inset 5px 5px 8px #66d9ff;
    box-shadow: inset -5px -5px 8px #00ace6;
}

#eval:hover{
    box-shadow: inset 5px 5px 8px #035f7e;
    box-shadow: inset -5px -5px 8px #23274e;
}

#ac{
    background: rgb(23, 207, 39);
    color: white !important ;
    
}

#ac:hover{
    box-shadow: inset 5px 5px 8px #1fc90f;
    box-shadow: inset -5px -5px 8px #27882c;
}

#ce{
    background: rgba(224, 8, 91, 0.747);
    color: white !important ;
    
}

#ce:hover{
    box-shadow: inset 5px 5px 8px #c21e18;
    box-shadow: inset -5px -5px 8px #700d0d;
}