<!DOCTYPE html>
<html>
  <head>
    <style>
      body {
        margin: 0;
        font-size: 16px;
      }
      .box {
        background: rgb(0, 0, 255);
        width: 100%;
        height: 10px;
      }

      @media (width: calc(900vh + 10px)) {
        .box {
          background: rgb(255, 165, 0);
        }
      }
    </style>
  </head>
  <div class="box"></div>
</html>
