How to use Vanta as background?

Hi,

I want to use the vanta 3D effect as background, how to add the codes? https://www.vantajs.com/?effect=waves#(backgroundAlpha:1,color:21896,gyroControls:!f,minHeight:200,minWidth:200,mouseControls:!t,scale:1,scaleMobile:1,shininess:30,touchControls:!t,waveHeight:15,waveSpeed:0.7000000000000001,zoom:1.2090486409155936)

Thanks in advance,