Hello,
Navigate to WoodMart > Header builder > edit default header (highlighted star icon), or you can go through the admin bar directly https://prnt.sc/Ct9ehRDvvDV9
Click on the Settings button and enable the Make it overlap: https://prnt.sc/t9tDLt8KWk82 > https://prnt.sc/1p60FbT7tCPP
Set your slider height in its settings, You can adjust the slider height from Slides > Sliders > Edit the Slider.
Change the Slide Height as needed for Desktop, Tablet, and Mobile.
Please refer to this screenshot: https://snipboard.io/UHLEMv.jpg
Best Regards,