calculator.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'poppins', sans-serif;
}

body{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: rgb(8, 8, 8);
   
}
.calculator{
    position: relative;
    display: grid;
}
.calculator .value{
    grid-column: span 4;
    height: 50px;
    width: 240px;
    text-align: right;
    border: none;
    outline: none;
    padding: 10px;
    font-size: 18px;   
}
.calculator span{
    display: grid;
    width: 60px;
    height: 60px;
    color: white;
    background-color: rgb(8, 8, 71);
    place-items: center;
    border: 1px solid rgb(0, 0, 0, 0.1);
}
.calculator {
    background: chocolate;
    color: #111;
}
.calculator span.clear{
    grid-column: span 2;
    width: 120px;
    background: rgb(212, 110, 37, 0.2);
}
.calculator span.plus{
    grid-row: span 2;
    height: 120px;
}
.calculator span.equal{
    background: lightseagreen;
}