body {
    padding: 50px;
    font: 14px "Lucida Grande", Helvetica, Arial, sans-serif;
}

a {
    color: #00B7FF;
}

.variable-available-sub-menu {
    background-color: #80bdff;
}

.variable-available-main {
    background-color: #80bdff;
    border: 1px solid #646464;
}

.variable-attribution-main {
    background-color: cornflowerblue;
    border: 1px solid #646464;
}

.variable-attribution-sub-menu {
    background-color: cornflowerblue;
}

.operation-sub-menu {
    background-color: #5e1b7c;
}

.operation-main {
    background-color: #624e7c;
}