.hint {
border: 1px solid gray;
border-radius: 15px; 
background: url(../img/help_hint.png) 5px 5px no-repeat #ffffa0;
padding: 15px 30px;
width: 50%;
display: block;
}

table.tetra {
border-collapse: collapse;
}

thead.tetra {
background-color: #48c3f3;
}

tr.total {
background-color: #48c3f3;
font-weight: bold;
}
/*
td {
padding: 2px;
}
*/