蒙版，拉渐变

<div class="quote"><blockquote><a class="nopicture" rel="noopener" href="https://bbs.dji.com/forum.php?mod=redirect&amp;goto=findpost&amp;pid=1497841&amp;ptid=118435" target="_blank"><font color="#5c5c5c">搞不懂</font><font color="#5c5c5c">精灵4 Pro</font><font color="#9d9d9d">2017-3-24 11:50</font></a>
蒙版，拉渐变</blockquote></div>拉渐变之后天空图会把大楼什么的盖住，很不协调