/* Sortable tables */
table.sortable thead {
    background-color:#eee;
    color:#666666;
    font-weight: bold;
    cursor: default;
}

table {
    font-size:16px;
    font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
    border-collapse: collapse;
    border-spacing: 0;
}

#customers td, th {
    border: 1px solid #ddd;
    text-align: left;
    padding: 8px;
}

tr:nth-child(even){background-color: #f2f2f2}

th {
    padding-top: 11px;
    padding-bottom: 11px;
    background-color: #4CAF50;
    color: white;
    cursor: pointer;
}

.calculate {
   background: url(left.gif) no-repeat;
   padding-left: 30px;
}

.calculate div {
   background: url(right.gif) top right no-repeat;
   padding-right: 30px;
}

.calculate div div {
   background: url(center.gif) repeat-x;
   padding: 0;
   height: 30px;
}

.center {
    text-align: center;
    margin: auto;
    padding: 10px;
}