* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html,
body {
  height: 100%;
  width: 100%;
  font: 400px 16px/1.428 Consolas;
}
body {
  overflow-x: hidden;
  overflow-y: scroll;
}
.box {
  height: 100vh;
  width: 100vw;
  position: relative;
}
.topBar {
  height: 60px;
  width: 100%;
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  border-bottom: 3px solid black;
  font-size: 1.25rem;
  text-align: center;
  background-color: #b2b2b2;
}
.frame {
  height: calc(100% - 40px);
  width: 100%;
  position: absolute;
  top: 60px;
  left: 0;
  border-top: 1px solid blue;
  overflow-x: hidden;
  overflow-y: scroll;
}