Three parts: 1. Header (LOGO, navigation bar, search box, user TAB) 2. Middle School (Course Selection, My Curriculum schedule, Excellent Recommendation, Introduction to Programming, Data Analyst, Machine Learning Engineer, Front-end Development Engineer) 3. At the bottom of the

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                    <img src="images/pt4.png" alt="">
                    <h4>Cocos2d-x 引擎源码中的纹理优化 </h4>
                    <p><span>中级</span> • 2378人在学习</p>
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                    <h4>Unity Profiler入门 </h4>
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                    <img src="images/pt3.png" alt="">
                    <h4>Kami2首页界面切换效果 </h4>
                    <p><span>高级</span> • 1125人在学习</p>
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