Gravity Form: checkboxes plus grandes

Pour agrandir le style par défaut des checkboxes

.gform_wrapper .gfield_checkbox li input[type=checkbox] {
        opacity: 0;
        position: absolute;
    }

    .gform_wrapper .gfield_checkbox li input[type=checkbox]+label {
        position: relative;
        overflow: hidden;
        padding-left: 35px;
        cursor: pointer;
        display: inline-block;
        font-size: 16px;
        line-height: 22px;
    }

    .gform_wrapper .gfield_checkbox li input[type=checkbox]+label:before,
    .gform_wrapper .gfield_checkbox li input[type=checkbox]+label:after {
        content: '';
        position: absolute;
        left: 0;
        z-index: 1;
        -webkit-transition: .2s;
        transition: .2s;
    }

    /* after */
    .gform_wrapper .gfield_checkbox li input[type=checkbox]:not(:checked)+label:after {
        width: 20px;
        height: 20px;
        border: 2px solid #000;
        top: 0px;
    }

    .gform_wrapper .gfield_checkbox li input[type=checkbox]:checked+label:after {
        top: 0;
        width: 20px;
        height: 20px;
        border: 2px solid #3fa1fd;
        background-color: #3fa1fd;
        z-index: 0;
        border-radius: 2px;
    }

    /* before */
    .gform_wrapper .gfield_checkbox li input[type=checkbox]:not(:checked)+label:before {
        width: 0;
        height: 0;
        border: 3px solid transparent;
        left: 6px;
        top: 10px;
        -webkit-transform: rotateZ(37deg);
        transform: rotateZ(37deg);
        -webkit-transform-origin: 100% 100%;
        transform-origin: 100% 100%;
    }

    .gform_wrapper .gfield_checkbox li input[type=checkbox]:checked+label:before {
        top: 0;
        left: 1px;
        width: 8px;
        height: 13px;
        margin-top: 3px;
        border-top: 2px solid transparent;
        border-left: 2px solid transparent;
        border-right: 2px solid #fff;
        border-bottom: 2px solid #fff;
        -webkit-transform: rotateZ(37deg);
        transform: rotateZ(37deg);
        -webkit-transform-origin: 100% 100%;
        transform-origin: 100% 100%;
    }