h1

text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text

h2

h3

abc abc

abc + abc

code

hello

const main = () => console.log("hello")
main();

one line code

rm -rf

flowchart

  graph TD;
    A-->B;
    A-->C;
    B-->D;
    C-->D;

link in p tag

link: alanhc.github.io is best