body {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #e0e3eb;
}

.container {
    position: relative;
    max-width: 300px;
    width: 100%;
    padding: 10px 20px 20px;
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 5px rgba(0, 0, 0, 0.05);
}

.display {
    height: 80px;
    width: 100%;
    margin-bottom: 10px;
    font-size: 25px;
    outline: none;
    border: none;
    text-align: right;
    color: blue;
    font-weight: 500;
    pointer-event: none;
}

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

.buttons button {

    padding: 10px;
    border-radius: 6px;
    border: none;
    font-size: 20px;
    background-color: #eee;
    cursor: pointer;
}

.buttons button:active {
    transform: scale(0.99);

}

.operator {
    color: red;
}

.p {
    position: relative;
    display: flex;
    align-items: center;
}