<style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body,
        html {
            height: 100%;
        }
        .teste {
            height: calc(100% - 10px);
            width: 100%;
            content: '';
            background-color: red;
        }
    </style>

<div class="teste"></div>
<input type="text" id="texteeee">

{
  "author": "Essência Digital",
  "background_color": "#ffffff",
  "description": "Teste",
  "display": "fullscreen",
  "icons": [
    {
      "src": "http://192.168.26.183:8080/",
      "sizes": "192x192",
      "type": "image/png"
    }
  ],
  "manifest_version": 2,
  "name": "Teste",
  "orientation": "portrait",
  "short_name": "Teste",
  "start_url": "http://192.168.26.183:8080/",
  "theme_color": "#ffffff",
  "version": "0.1"
}