* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    color: #ffffff;
}

body {
    background-color: #000000;
    height: 100vh;
    width: 100vw;
    display: grid;
    justify-content: center;
    align-items: center;

}

div {
    background: linear-gradient(191.34deg, #52607c -4.95%, #000000 103.74%);
    border-radius: 39px;
    width: 375px;
    height: 568px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(7, 1fr);
    padding: 20px;

}

input {
    font-size: 48px;
    grid-column: 1 / 5;
    grid-row: 1 / 3;
    background: #000000;
    border: none;
    outline: none;
    text-align: right;
    padding-top: 50px;
    

}

button {
    font-size: 24px;
    border-radius: 16px;
    border: none;
    margin: 10px;
    cursor: pointer;

}

button:hover {
    opacity: 0.8;

}

button:active {
    opacity: 0.6;
}



.black-button {
    background: #303136;
}

.button-azul {
    background: #005DB2;
}

.igual-button {
    background: #1991FF;
}

.cinza-button {
    background: #616161;

}

.zero {
    grid-column: 1 / 3;
}

.igual {
    grid-row: 6 / 8;
    grid-column: 4 / 5  ;
}