* {
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    box-sizing: border-box;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    width: 100%;
}

.calendar {
    width: 450px;
    height: 520px;
    background-color: black;
    color: lightgray;
    border-radius: 10px;
    box-shadow: 4px 4px 8px rgba(0, 0, 0, .4);
    margin: 0 2px;
}

.date {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    background-color: lightseagreen;
    height: 120px;
    border-radius: 10px 10px 0 0;
}

h1 {
    text-transform: uppercase;
    font-size: 30px;
}

.weekdays {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 50px;
}

.weekdays div {
    font-size: 15px;
    font-weight: bold;
    letter-spacing: 1px;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.days {
    display: flex;
    flex-wrap: wrap;
    margin: 0 auto;
    padding: 2px;
}

.days div {
    width: 14.28%;
    height: 55px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.days div:hover:not(.empty) {
    border: 2px solid gray;
    border-radius: 2px;
}

.days div.today {
    background-color: lightseagreen;
    border: 2px solid gray;
}