app/assets/stylesheets/cortex/layout.scss
.layout__container {
display: flex;
flex-wrap: nowrap;
align-content: stretch;
width: 100%;
height: 100%;
}
.layout__topbar-content__container {
flex-grow: 1;
flex-shrink: 1;
flex-basis: 100%;
display: flex;
flex-direction: column;
}
.layout__main-content {
flex-grow: 1;
flex-shrink: 1;
flex-basis: auto;
}