Full viewport width container (breaking free from its container) http://blog.cloudfour.com/breaking-out-with-viewport-units-and-calc/
.full-width {
width: 100vw;
position: relative;
left: 50%;
right: 50%;
margin-left: -50vw;
margin-right: -50vw;
}
.u-release {
margin-left: calc(-50vw + 50%);
margin-right: calc(-50vw + 50%);
}
// it requires this fix to prevent horizontal scrollbar from showing up
html,
body {
overflow-x: hidden;
}