.a{
    background-color: aqua; color: crimson;
}

.b{
    background-color: black; color: rgb(255, 255, 255);
}

.c{
    background-color: blue; color: burlywood;
}

body{
    height: 100vh; width: 100%; margin: 0%; 
}


table{
    height: 80%; width: 80%; text-align: center;
}

.a1{
    height: 100%; width: 100%; display: flex; justify-content: center; align-items: center; background-color: black;
}

.a2{
    height: 40%; width: 40%; display: flex; justify-content: center; align-items: center; background-color: rgb(107, 86, 226);
}