How Do I Remove This Spacing On My Home Page?

[timelessracing]

Hello, I would like to do this just for mobile. I want to remove the spacing shown by the arrow I drew on the image. It is on my home page. 

https://timelessracingco.com/

[BSSCommerce-HDL]

Hi @timelessracing, 

Step 1: Go to Shopify Admin -> Online Store ->Theme -> Edit code

Step 2: Search file theme.liquid

Step 3: Insert this code above </head> tag:

<style>
@media only screen and (max-width: 767px) {
    .background-video.mobile-height-500 {
        min-height: 350px !important;
    }
}
</style>

Hope this can help you,

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[timelessracing]

Hey, this is what happens when I do that code: 

[timelessracing]

All i want to do is cut off some of the bottom while keeping the text as it is