Function leftSlider

Border-Radius/app.js:12–20

(event)

function leftSlider(event){
    //go furthur only if id is left
    if (event.target.id !== `left`) return;

    //when #left is checked
    if(event.target.checked){
        ranger(leftElem);
    }
}

function ranger(){
    let rangerValue = rangerElem.value;