在div上居中
<div class="container" style="display: flex; justify-content: center; align-items: center; ">
在圖像調
<img id=im1 style="max-width: 150%; max-height: 150%; class="widget widget-image" alt src=static/picture/spltop.png >
标签：居中,div,像素 From： https://www.cnblogs.com/jscs/p/17398228.html