优化海报二维码

resources/views/admin/poster/index.blade.php

@@ -42,7 +42,7 @@
 		</div>
 		<div class="form-group col-sm-4">
 			<label class="control-label">二维码尺寸</label>
-			<input class="form-control" required="required" type="number" placeholder="二维码尺寸(最大1280px)" name="size" max="1280" maxlength="20" value="" />
+			<input class="form-control" required="required" type="number" placeholder="二维码尺寸(50~1280px)" min="50" name="size" max="1280" maxlength="20" value="" />
 		</div>
 		<div class="form-group col-sm-12">
 			@csrf