Дмитрий Давыдов

const appHeight = () => {
    const doc = document.documentElement
    doc.style.setProperty('--app-height', '${window.innerHeight}px')
}
window.addEventListener('resize', appHeight)
appHeight()

:root {
   --app-height: 100%;
}

html,
body {
    padding: 0;
    margin: 0;
    overflow: hidden;
    width: 100vw;
    height: 100vh;

    @media not all and (hover:hover) {
        height: var(--app-height);
    }
}

if (this.$route.name === 'route-name') {
  // code
}