How can I adjust a full width video to 350px height on my home page?

Store Design
3

@LEUNGGUOTAO

Go to Online Store->Theme->Edit code then go to assets/theme-styles-responsive.scss.liquid ->paste below code at the bottom of the file.

@media (min-width: 1200px){
#shopify-section-16305778073f7b73b8 .container {
    max-width: 100%;
    padding-left: 15px;
    padding-right: 15px;
}
}

Thanks!