Hello ahsanahmedkhann,

1. First Add to cart button now showing as you wanted https://prnt.sc/5TOns8pjTSEJ

2. Please add the following Custom CSS code to Theme Settings > Custom CSS > Global Custom CSS:

.second-table-variations [class*="wd-single-"].wd-swatch-layout-inline table.variations tbody {
    align-items: flex-start;
}

.second-table-variations [class*="wd-single-"].wd-swatch-layout-inline table.variations .cell {
    vertical-align: baseline;
}

Regards,