Update app.py

app.py

@@ -24,7 +24,9 @@ description = """
 <a href='https://arxiv.org/abs/2310.00390'>arXiv</a> | <a href='https://github.com/AlaaLab/InstructCV' target='_blank'>Code</a></p>
 We develop a <b>unified language interface</b> for computer vision tasks that abstracts away task-specific design choices and enables task execution by following natural language instructions. \n\n
 <b>Tips for using this demo</b>: Please upload a new image and provide an instruction outlining the specific vision task you wish InstructCV to perform (e.g., “Segment the dog”, “Detect the dog”, “Estimate the depth map of this image”, etc.). \n
-<img src="https://i.postimg.cc/hjtwgCDr/Fig1-Instruct-CV-1.png" alt="Application of InstructCV to new test images & user-written instructions" width="400" height="auto">
+<div style="text-align: center;">
+  <img src="https://i.postimg.cc/hjtwgCDr/Fig1-Instruct-CV-1.png" alt="Application of InstructCV to new test images & user-written instructions" width="500" height="auto">
+</div>
 """  # noqa