.a 
{
color:red; background-color:lightblue; font-size:25; font-weight:600; font-family:sans-serif;
}
.b 
{color:green; font-family:sans-serif; font-size:15;
}
.c 
{
color:black; font-size:17; padding:10px; border-right: 2px groove green;
}
.d
{
color:blue;
}
.e
{
color:navy; text-decoration:none; font-weight:bold;
}
.e:hover
{
color:red; text-decoration:underline;
}
.z
{
text-align:center; color:black; font-family:sans-serif; border: 7px groove #c8c8c8; padding: 30px; font-size:21px; background-color:#c8c8c8;
}