main {
    margin: 10px;
    padding: 10px;
    box-sizing: border-box;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    min-height: calc(100vh - 62px - 50px);
}

header{
    background-color: blanchedalmond;
    display: flex;
    height: 62px;
    padding: 0 30px;
}

header ul{
    display: flex;
    align-items: center;
    height: 62px;
    justify-content: flex-end;
    gap: 60px;
}

main{
    background-color: aliceblue;
    padding: 20px 20px 60px 20px;
}
#my_table th{
border: 3px solid blue;
width: 80px;
padding: 5px;
text-align: center;
}

.not_current_month{
   opacity: 0.5; 
}

#current_date{ 
    font-weight: bold;
    background-color:gray;
    color: aqua;
}

#my_table th:not(.not_current_month):hover{
    background-color: burlywood;
}

#card_cont{
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    justify-content: space-evenly;
}

footer{
    background-color: gray;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50px;
    text-align: center;
    line-height: 50px;
}