calc.css

/* .calculator{
    padding: 100px;
    border-radius: 1em;
    height: 400px;
    width: 500px;
    margin: auto;
    background-color: black;
    box-shadow: red;
}
.display-box{
    font-family:'Obitron' sans-serif;
    background-color: #dcdbe1;
    border: solid black 0.5px;
    color: black;
    border-radius: 5px;
    width: 100%;
    height: 65%;
    
    

}
#btn {
    background-color: #fb006f;

}
input[type=button] {
    font-family:'Orbitron', sans-serif ;
    background-color: #64278f;
    color: white;
    border: solid black 0.5px;
    width: 100%;
    border-radius: 5px;
    height: 100%;
    outline: none;


}
input:active[type=button]{
    background-color: blue;
    -webkit-backface-visibility: visible;
    -moz-box-shadow:inset 0px 0px 5px #c1c1c1;
    box-shadow: #c1c1c1;
} */