* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Maven Pro", sans-serif;
    font-optical-sizing: auto;
    font-weight: 400;
    font-style: normal;
}

body {
    background-color: #000;
    width: 100vw;
    height: 100vh;
    max-width: 100vw;
    max-height: 100vh;
    overflow: hidden;
}

h1 {
    color: #99ffbb;
}

.calculatorbody {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(4, 1fr);
}

input {
    width: 300px;
    height: 40px;
    color: #333;
    font-size: 20px;
    outline: none;
    padding: 8px;
    grid-area: ;
}