andrei0077,
<!DOCTYPE html>
<html>
<body>
<p>Click the button to move it.</p>
<button id="myButton" onclick="myFunction()" style=" left: 50px; position: relative">Click to move</button>
<script>
function myFunction()
{
myButton.style.left = parseFloat(myButton.style.left) + 50 + 'px';
}
</script>
</body>
</html>