body {
    background-color:aquamarine;
}
#content {
    background-color:white;;
    padding: 30px;
    border-radius: 50px;

}
#banner {
    clear: both;
    margin-left: auto;
    margin-right: auto;
    align-self: center;
    font-size: 48px;
    font-family: Arial;
}
video {
    clear: both;
    margin-left: auto;
    margin-right: auto;
}
table {
    clear: both;
    margin-left: auto;
    margin-right: auto;
    background-color: darkslategrey;
    border-radius: 20px;
    padding: 10px;
    color:aliceblue;
}
table tr th {
    font-weight: bold;
}