*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    /* border: 1px solid red; */
}

html {
    font-size: 22px;
    font-weight: 500;   
}

body {
    background-color: rgb(64, 82, 102);
}

.calculator {
    margin: 1.5rem;
    display: grid;
    justify-content: center;
    align-content: center;
    grid-template-columns: repeat(4, 4rem);
    grid-template-rows: minmax(120px, auto) repeat(5, 4rem);
}

.screens {
    background-color: #333533;
    color: white;
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: space-between;
    padding: 1rem;
    word-wrap: break-word;
    word-break: break-all;
    border-radius: 5px 5px 0 0;
    font-family: 'Calculator', sans-serif;
    letter-spacing: 3px;
                                                
}

.second-screen {
    font-size: 0.8rem;
    font-weight: 400;
}

.main-screen {
    font-size: 1.5rem;
}

button {
    cursor: pointer;
    border-radius: 5px;
}
button:hover, button:active {
    background-color: #616561cd;
    color: #dfe3df;
}

.btn-make-biger{
    font-size: 2rem;
}

.column-dbl {
    grid-column: span 2;
}

.nr {
    background-color: #e8eee872;
}