body {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-family: Arial, sans-serif;
    margin: 20px;
}
.grid {
    display: grid;
    grid-template-columns: repeat(3, 100px);
    grid-gap: 10px;
    margin-bottom: 20px;
}
.box {
    width: 100px;
    height: 100px;
    background-color: lightgray;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    cursor: pointer;
    transition: background-color 0.3s;
    border-radius: 3%;
}
.note-area {
    width: 400px;
    height: 350px;
    margin-top: 20px;
    margin-bottom: 10px;
}
.header
{
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
    align-self: center;
    align-items: center;
}

.upper
{
    display: flex;
    flex-direction: column;
    margin-top: 50px;
    align-items: center;
    align-content: center;
    align-self: center;
}

.lower
{
    display: flex;
    flex-direction: column;
    align-items: center;
    align-content: center;
    align-self: center;
}

.question
{
    margin-top: 10px;
    margin-bottom: 10px;
}
.password-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    font-family: Arial, sans-serif;
}