#barf-calc-root input, #barf-calc-root select {
    margin: 8px 0;
    width: 250px;
}
.barf-result { margin-top: 20px; font-weight: bold; }
.barf-ok { color: green; }
.barf-low { color: blue; }
.barf-high { color: red; }
.barf-block { background: #ffdddd; border: 1px solid red; padding: 8px; }