[參考網站]
HTML 教學 http://www.w3schools.com/html/
線上學習與測試 http://codepen.io/ ; https://jsfiddle.net/
Html Color Codes: http://html-color-codes.info/
CSS tool (有圓角、陰影等等的小功能) http://www.cssmatic.com/
Sublime Text 網頁編輯器軟體下載 http://www.sublimetext.com/
<html>
<head>
<meta charset="UTF-8">
<title>蛋黃哥</title>
<style>
img{
border:10px solid #721E1E;
width:200px;
height:200px;
border-radius: 50%;
-moz-border-radius: 50%;
-webkit-border-radius: 50%;
}
</style>
</head>
<body>
<h1>這裡是H1</h1>
<h2>這裡是H2</h2>
<h3>這裡是H3</h3>
<h4>這裡是H4</h4>
<h5>這裡是H5</h5>
<h6>這裡是H6</h6>
<a href="http://www.google.com">我是超聯結</a>
<iframe width="560" height="315" src="https://www.youtube.com/embed/bS2mmJuMwdg" frameborder="0" allowfullscreen></iframe>
<img src="http://www.niusnews.com/upload/imgs/default/14MayC/GRDETAMA/11.png">
</body>
</html>