body{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

main{
    text-align: center;
    /* border: 5px solid blue; */
}

div a{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}