window.onload=function(){

var body = document.getElementsByTagName("body");

var btn=document.getElementById("calculateGrades");

var logo=document.getElementsByClassName("App-logo");

btn.onclick =function(){anime({

targets: logo,

width: {

value: '-=60px', // 28 - 20 = '8px'

duration: 1800,

easing: 'easeInOutSine'

},height: {

value: '-=60px', // 28 - 20 = '8px'

duration: 1800,

easing: 'easeInOutSine'

},

translateY:150,

duration:4000

});

}}