html, body {
  margin: 0;
  width: 100%;
  height: 100%;
}

* {
  box-sizing: border-box;
}

body {
  background: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
  color: #222;
}

.page {
  min-height: 100%;
  padding: 10px;
  background: #ffffff;
}

.note-shell {
  width: min(100%, 960px);
  min-height: calc(100vh - 20px);
  margin: 0 auto;
  border: 1px solid #cfc58b;
  background:
    linear-gradient(to bottom, transparent 31px, rgba(112, 97, 50, 0.10) 32px),
    linear-gradient(to right, rgba(201, 98, 98, 0.30) 63px, transparent 63px),
    #fbf7cf;
  background-size: 100% 32px, 100% 100%, auto;
}

#editor {
  display: block;
  width: 100%;
  min-height: calc(100vh - 22px);
  margin: 0;
  padding: 3px 18px 12px 82px;
  border: 0;
  outline: none;
  resize: none;
  background: transparent;
  color: #222;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 18px;
  line-height: 32px;
}

@media (max-width: 720px) {
  .page {
    padding: 4px;
  }

  .note-shell {
    width: 100%;
    min-height: calc(100vh - 8px);
    border-color: #d6cc96;
    background:
      linear-gradient(to bottom, transparent 27px, rgba(112, 97, 50, 0.10) 28px),
      linear-gradient(to right, rgba(201, 98, 98, 0.24) 51px, transparent 51px),
      #fbf7cf;
    background-size: 100% 28px, 100% 100%, auto;
  }

  #editor {
    min-height: calc(100vh - 10px);
    padding: 2px 12px 10px 18px;
    font-size: 17px;
    line-height: 28px;
  }
}