// dom selection


const judul = document.getElementById('judul');
judul.style.color = 'red';
judul.style.backgroundColor = '#ccc';
judul.innerHTML = 'Sofronius';

// documenttagname

const p = document.getElementsByTagName('p');

for (let i = 0; i < p.length; i++) {
    p[i].style.backgroundColor = ' lightblue';
}

const h1 = document.getElementsByTagName('h1')[0];
h1.style.fontSize = '50px';


// class name

const p1 = document.getElementsByClassName('p1')[0];
p1.innerHTML = 'ini diubah boss';