Thats the padding on each section. For example, the first one is .home-feature-1 .wrap
which will look like this –
.home-feature-1 .wrap {
margin: 0 auto;
overflow: hidden;
padding: 200px 0 150px;
width: 1140px;
}
Should be around line 1241….each section after that has the same thing, so adjust the 200px for the top, and the 150px for the bottom. Let me know if you find it.