CSS New Features

Wouldn’t it be really great if CSS had the following:

div.leftcol % div.col // inherit from class div.col
{
float:left;
}

and also:

.header
{
font-size:12px;
h1 {
color: red;
}
}

equivalent to:

.header {
font-size: 12px;
}
.header h1 {
color: red;
}