/* Jello Layout */
#allcontent {
  width: 900px;
  margin-left: auto;
  margin-right: auto;
  padding: 20px;
  background-color: #f4f4f4;
}

/* Multiple element selector */
h1, h2 {
  font-family: Arial, sans-serif;
}

/* Element selectors */
h1 {
  text-align: center;
}

p {
  font-family: Arial, sans-serif;
  font-size: 16px;
}

/* Class selector */
.lead {
  text-align: center;
  font-size: 18px;
}

/* Image styling */
.profile {
  display: block;
  margin-left: auto;
  margin-right: auto;
  border-radius: 10px;
  max-width: 100%;
  height: auto;
}

/* Nav styling */
.navlist, .navlist ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.navlist > li {
  margin: 6px 0;
}

/* Indented sub-list */
.subnav {
  margin-top: 6px;
  margin-left: 20px;
}

.subnav li {
  margin: 4px 0;
}

/* Multiple element selector for link states */
a:link, a:visited {
  color: #b30000;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ID selector */
#footer {
  margin-top: 30px;
  text-align: center;
  font-size: 14px;
  color: #666;
}

/* Responsive adjustment */
@media (max-width: 950px) {
  #allcontent {
    width: auto;
    margin-left: 10px;
    margin-right: 10px;
  }
}