body {
    font-family: 'Roboto Mono', 'sans-serif';
    margin: 5%;
    background-color: rgb(18, 17, 20);
    padding: 0;
}
table, tr, td {
    border-collapse: collapse;
}
table {
    width: 100%;
    height: 70vh;
    background-color: #080808;
    color: #f0f0f0;
}        

td {
    width: 25%;
    text-align: center;
    font-size: 31px;
}
td:hover {
    background-color:rgb(24, 24, 24);
    cursor: pointer;
}
td:active {
    outline: none;
    border: none;
}
h1 {
    text-align: center;
    color: rgb(240, 240, 240);
}
table {
    border-radius: 35px;
}
#resultarea {
    height: 10vh;
    background-color: rgb(8, 8, 8);
    border-radius: 60px;
    margin-bottom: 5%;
}
#result {
    background-color: rgb(46, 28, 129);
}
#divide {
    border-top-right-radius: 33px;
}
#minus {
    border-bottom-right-radius: 33px;
}
#null {
    border-bottom-left-radius: 33px;
}
#seven {
    border-top-left-radius: 33px;
}
#del {
    border-top-right-radius: 33px;
    background-color: rgb(134, 0, 0);
}
.highlight {
    background-color: rgb(17, 17, 17);
}
#resultarea {
    color: white;
    font-size: 31px;
    font-weight: 900;
    display: flex;
    justify-content: right;
    padding-right: 10%;
    align-items: center;
    box-sizing: border-box;
}