* {
    font-family: sans-serif , 'Roboto';
}

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color:burlywood;
}

.header {
    margin-top: 50px;
    color: #333;
    text-align: center;
    font-size: 50px;
    font-weight: bold;
}

.display {
    box-shadow: rgba(9, 30, 66, 0.25) 0px 2px 2px, rgba(9, 30, 66, 0.13) 0px 0px 3px 3px;
    max-width: 260px;
    overflow-wrap: break-word;
    display: flex;
    flex-direction: column;
    text-align: right;
    background-color: white;
    border-radius: 10px;
    min-height: 110px;
    font-size: 20px;
    border: 2px solid black;
}

.calculator-container {
    box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
    height: 540px;
    border-radius: 10px;
    background-color: rgb(205, 205, 205);
    padding: 20px;
    border: 2px solid black;
    margin-top: 100px;
}

.buttons{
    margin-top: 30px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 10px;

}

button {
    box-shadow: rgba(0, 0, 0, 0.35) 0px 1px 1px;
    background-color: white;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    font-size: 25px;
}

.clear,.delete {
    font-size: 20px;
    grid-column: span 2;
}

.display-old {
    margin-right: 10px;
    margin-top: 5px;
    margin-bottom: 10px;
    font-size: 20px;
}

.display-current {
    margin-right: 10px;
    box-sizing: border-box;
    word-wrap: break-word;
    word-break: break-all;
    font-size: 30px;
}

.pressed {
    background-color: #ccc;
}