:root {
  --sidebar-width: 4.5em;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Roboto';
}

* {
  outline: none;
  box-sizing: border-box;
}

.main {
  margin-left: auto;
  margin-right: auto;
  max-width: 992px;
  padding: 2em 1.5em;
}

.main h1 {
  font-size: 4em;
  color: red;
background-color:Black;
text-align:center;
}
.main h2 {
  font-size: 2em;
  color: red;
background-color:#ffcccc;
  margin-top: 10px;
}

.main h3 {
  font-size: 1.5em;
  margin-top: 0px;
}

.main h4 {
    color: #339966;
    margin-top: 10px;
    padding-bottom: 0em;
}

.main p {
  color: #444;
  font-size: 1.em;
  line-height: 1;
  text-align: justify;
}

@media (min-width: 572px) {
  .main {
    margin-left: var(--sidebar-width);
  }
}

@media (min-width: 992px) {
  .main {
    padding: 2.5em;
  }
}