.customize-control-quad  {
    display: flex; 
    flex-direction: row; 
    flex-wrap: wrap; 
    justify-content: space-between;
}

.customize-control-quad .input-wrapper {
    margin-bottom: 5px;
}

.customize-control-quad.columns-4 .input-wrapper {
    width: calc((100% - 15px) / 4);
}

.customize-control-quad.columns-3 .input-wrapper {
    width: calc((100% - 10px) / 3);
}

.customize-control-quad.columns-2 .input-wrapper {
    width: calc((100% - 5px) / 2);
}

.customize-control-quad.columns-1 .input-wrapper {
    width: 100%;
}