.khz {
margin-right: 4px;
overflow: hidden;
padding: 4px;
font-family: Courier, monospace;
font-size: 12px;
width: 60px;
height: 15px;
text-align: right;
background: #000;
color: #0f0;
border: 2px inset #888;
border-radius: 4px;
user-select: none;
}