*{
    margin: 0px;
    padding: 0px;
}
/* Chrome, Safari, Edge, Opera */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Firefox */
input[type=number] {
  -moz-appearance: textfield;
}

body{
    
}
@font-face {
    font-family: digital;
    src: url(digital-7.ttf);
}
.calc-container{
    margin: auto;
    margin-top: 50px;
    background: #000;
    height: auto;
    width: 300px;
    padding: 10px;
    border-radius: 10px;
}
.calc-display{
    height: 50px;
    width: 280px;
    background: rgb(192, 184, 184);
    border: 0px;
    text-align: right;
    font-size: 50px;
    padding: 10px;
    border-radius: 10px;
    font-family: digital;
}
input.calc-display:focus-visible {
    outline: none;
}
table {
    width: 100%;
    border: 1px solid gray;
    text-align: center;
    border-spacing: 0px;
    margin-top: 20px;
}
table tr td {
    width: 25%;
    background: #000;
    color: #fff;
    border: 1px solid gray;
    height: 50px;
    font-weight: bold;
    font-size: 20px;
    cursor: pointer;
}
table tr td:hover {
    background: rgb(138, 12, 12);
}
table tr:last-child td:last-child {
    background: rgb(19, 87, 133);
    cursor: pointer;
}
table tr:last-child td:last-child:hover {
    background: rgb(56, 165, 238);
}
h1{
    text-align: center;
    margin-top: 50px;
}