* {
    box-sizing: border-box;
    margin: 0;
    font-family: 'JetBrains Mono';
} body {
    padding: 15px;
    background: rgb(19, 18, 18);
    color: white;
    display: flex;
    align-items: center;
    flex-direction: column;
    justify-content: center;
    min-height: 100vh;
} div {
    border: 1px solid rgb(56, 50, 50);
} p {
    margin-top: 10px;
} div#calc-el {
    background: rgba(6, 20, 65, 0.2);
    padding: 30px;
    margin-top: 20px;
    border-radius: 15px;
    max-width: 400px;
} input {
    padding:5px;
    padding-left: 20px;
    padding-right: 20px;
    font-size: 2em;
    border: none;
    border-radius: 7px;
    background: black;
    color: white;
    width: 100%;
    text-align: right;
} table {
    margin-top: 20px;
    width: 100%;
    border: none;
    empty-cells: hide;
    border-spacing: 5px;
} table td {
    background: rgb(56, 55, 53);
    /*border: 2px solid crimson;*/
    text-align: center;
    padding-top: 10px;
    padding-bottom: 10px;
    border-radius: 5px;
} table td:hover {
    background-color: rgba(56, 55, 53,.2);
} table td:active {
    background-color: rgba(156, 154, 150, 0.2);
    color: white;
} table td.symbols {
    font-weight: bold;
} table td.symbols:active {
    background: green;
    color: yellow;
}



#cancel-el {
    color: crimson;
} #cancel-el:active {
    background: red;
    color: white;
} #equal-el {
    background: orange;
    color: black;
}#equal-el:active {
    background: orangered;
} #delete-el {
    background: crimson;
} #delete-el:focus {
    background: red;
} :is(#delete-el,#equal-el):hover {
    opacity: 20%;
} :is(#delete-el,#equal-el):active {
    opacity: 100%;
}

footer a {
    color: grey;
    border-bottom: 1px solid;
    text-decoration: none;
}
button {
    font-weight: 700;
    border: none;
    padding: 12px 20px;
    border-radius: 10px;
    background: grey;
}
button:hover {
    cursor: grab;
}
@media print {
    body {
        background-color: white;
        color: black;
    }
    #calc-el {
        background-color: #cfcfcf;
    }
    input {
        color: black;
    }
}