h1, h2, h3, h4, textarea, p, div, header, section, footer {
  padding: 0;
  margin: 0;
  box-sizing: border-box; }

h1, h2, h3, h4 {
  font-weight: normal; }

textarea {
  border: none;
  overflow: auto;
  outline: none;
  -webkit-box-shadow: none;
  -moz-box-shadow: none;
  box-shadow: none; }