.custom-heading{
    background: #ffffff;
    padding: 10px 20px;
    border-width: 1px;
    border-style: solid;
    border-color: #ddd;
}
.custom-heading .customize-control-title{
    font-size: 13px;
    line-height: 1;
    color: #1e8cbe;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin: 0;
}