table {
    width: 100%;
    border-collapse: collapse;
}

th {
    background: #333;
    color: white;
    font-weight: bold;
}

td, th {
    padding: 6px;
    border: 1px solid #ccc;
    text-align: left;
}

.SafeCall {
    background: #bfb;
}

.BlockedCall {
    background: #fbb;
}

.NeutralCall {
    background: #eee;
}

.NavButton {
    font-size: x-large;
    font-family: sans-serif;
    color: blue;
}

.NavSection {
    border-style: solid;
    border-width: 20px;
    border-color: transparent;
}

.TargetTable {
    font-size: x-large;
    font-family: monospace;
}

.CurrentDateTime {
    font-size: large;
    color: blue;
    text-align: center;
    font-family: monospace;
}

.EditBox {
    font-size: 18px;
}

.IconColumn {
    width: 24px;
    height: 38px;
    background: white;
    border: 0;
    padding: 0;
    text-align: center;
    vertical-align: middle;
}

.WhenCell {
    white-space: nowrap;
}

.CallerColumn {
    width: 100%;
}

.CallCountColumn {
    text-align: right;
}

.HistoryColumn {
    text-align: center;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    background: #333;
    color: white;
    font-weight: bold;
}

td, th {
    padding: 6px;
    border: 1px solid #ccc;
    text-align: left;
}

.SafeCall {
    background: #bfb;
}

.BlockedCall {
    background: #fbb;
}

.NeutralCall {
    background: #eee;
}

.NavButton {
    font-size: x-large;
    font-family: sans-serif;
    color: blue;
}

.NavSection {
    border-style: solid;
    border-width: 10px;
    border-color: transparent;
}

.TargetTable {
    font-size: x-large;
    font-family: monospace;
}

.CurrentDateTime {
    font-size: large;
    color: blue;
    text-align: center;
    font-family: monospace;
}

.EditBox {
    font-size: 18px;
}

.IconColumn {
    width: 24px;
    height: 38px;
    background: white;
    border: 0;
    padding: 0;
    text-align: center;
    vertical-align: middle;
}

.WhenCell {
    white-space: nowrap;
}

.CallerColumn {
    width: 100%;
}

.CallCountColumn {
    text-align: right;
}

.HistoryColumn {
    text-align: center;
}

Make space between nav sections smaller.
Make space between nav sections smaller.
