Wow to change font size in Checkbox in Dropdown widget

in form https://form.jotform.com/71592534292965 I would like to change font size in options (possible answers). 

I understand that it can be done with advanced CSS editor and even know how to change Label size or color.

But how to change options (Chose One, one, two, three).

Krzysztof

You can change font size by accessing these CSS lines

selecter .selecter-selected {

    background: url(../fs-selecter-arrow.png) right center no-repeat #F9F9F9;

        background-color: rgb(249, 249, 249);

    border: 1px solid #CCC;

    border-radius: 3px;

    color: #333;

    cursor: pointer;

    display: block;

    font-size: 20px; // EDIT THIS ONE

    margin: 0;

    overflow: hidden;

    padding: 8px 10px;

    position: relative;

    text-overflow: ellipsis;

    white-space: nowrap;

    z-index: 49;

}

.selecter .selecter-item {

    background: #FFF;

    border-bottom: 1px solid #E3E3E3;

    color: #333;

    cursor: pointer;

    display: block;

    font-size: 50px; // THIS ONE TOO

    margin: 0;

    overflow: hidden;

    padding: 8px 10px;

    text-overflow: ellipsis;

    width: 100%;

    box-sizing: border-box;

}

Thank you :)

Krzysztof