.

https://stackoverflow.com/questions/31391459/how-can-i-expand-a-child-div-to-100-screen-width-if-the-container-div-is-smalle

You can now do this

.full-width {    margin-left: calc(50% - 50vw);    margin-right: calc(50% - 50vw); }

or this

.full-width {    width: 100vw;    position: relative;    left: 50%;    right: 50%;    margin-left: -50vw;    margin-right: -50vw; }