hello, world

day1. 이미지 삽입

• md 방식 logo_img

    [logo_img](https://icefoxand.github.io/codeddong/assets/images/main-logo.png)

• html 방식

    <img src="https://icefoxand.github.io/codeddong/assets/images/main-logo.png" width="300" height="300">

day2. 동영상 삽입