.h0 { clear: both; }
.h5 { clear: both; height: 5px; font-size: 0; line-height: 0px; }
.h10 { clear: both; height: 10px; }
.h15 { clear: both; height: 15px; }
.h20 { clear: both; height: 20px; }
.h30 { clear: both; height: 30px; }
.h40 { clear: both; height: 40px; }
.h50 { clear: both; height: 50px; }