body {
    font-family: Arial, sans-serif;
}
.calendar {
    display: flex;
    flex-wrap: wrap;
}
.day {
    width: 14.28%;
    padding: 10px;
    box-sizing: border-box;
    border: 1px solid #ccc;
    margin: 1px;
    min-height: 100px;
}
.day h3 {
    margin: 0;
    font-size: 14px;
}
.day p {
    font-size: 12px;
    margin: 5px 0;
}