body{
    background-image: url("cala2.jpg");
}
.calc
{
    width: 400px;
    height: 500px;
    background: rgb(13, 22, 22);
    margin-top: 100px;
    margin-left: 550px;
    border-radius: 6px;
}
.output
{
    color: azure;
}
#screen
{
    width:80%;
    height: 55px;
    margin-left:35px;
    margin-top: 35px;
    pointer-events: none;
    background: rgb(188, 233, 187);
    font-size: 30px;
}
.buttons
{
    padding-left: 11px;
    margin-top: 10px;
}
.row{

    

}
.btn
{
    margin-left: 30px;
    margin-top: 30px;
    width: 55px;
    height: 40px;
    background: rgb(79, 90, 90);
    color: aliceblue;
}
.btn:hover{
    background: rgb(136, 193, 243);
}
.par
{
    margin-left: 600px;
    margin-top: 130px;
    font-weight: bold;
    color: rgb(106, 108, 109);
}
#link
{
    text-decoration: none;
}