* {
  box-sizing: border-box;
}
body {
  background: url('https://i9.glitter-graphics.org/pub/972/972139fs9a7586mp.gif');
  padding: 5px;
  height: 600px;
  margin: 5px;

 font-size:18px;
        font-family:ms gothic;
}
.page-wrap {
  background: blue;
  height: calc(100vh - 10px);
  box-shadow: 0 0 3px rgba(black, 0.33);

  display: grid;
  grid-template-columns: minmax(10px, 1fr) minmax(10px, 3fr);
  grid-template-rows: min-content min-content 1fr min-content;
  gap: 2px;

  > * {
    padding: 1rem;
    text-align: center;
  }

  @media (max-width: 600px) {
    grid-template-columns: 100%;
    grid-template-rows: auto;
    > * {
      grid-column: 1 / -1 !important;
      grid-row: auto !important;
    }
  }
}

.page-header {
  grid-column: 1 / -1;
  background: grey;
}

.page-sidebar {
  grid-column: 1 / 2;
  grid-row: 2 / 4;
  background: lightgrey;
}
.page-nav {
  grid-column: 2 / 3;
  background: lightgrey;
}
.page-main {
  grid-column: 2 / 3;
  background: white;
}
.page-footer {
  grid-column: 1 / -1;
  background: grey;
}

details p {
  text-transform: none;
  text-align: left;
}