Website Sederhana Dengan PHP dan MySQL

style.css

* {
  box-sizing: border-box;
}

body {
  font-family: Arial;
  margin-right: auto;
  margin-left: auto;
  max-width: 1024px;
  padding-right: 10px;
  padding-left: 10px;
}

.header {
  padding: 60px;
  text-align: center;
  background: #3498db;
  color: white;
}

.navbar {
  display: flex;
  background-color: #333;
}

.navbar ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar ul li.utama {
  display: inline-table;
}

.navbar ul li :hover {
  background-color: #2980b9;
}

.navbar ul li a {
  display: block;
  text-decoration: none;
  line-height: 40px;
  padding: 0 10px;
  color: #fff;
}

.utama ul {
  display: none;
  position: absolute;
  z-index: 2;
}

.utama:hover ul {
  display: block;
}

.utama ul li {
  display: block;
  background-color: #2980b9;
  width: 140px;
}

.main {
  display: flex;
  flex-wrap: wrap;
  border-left: 1px solid #3498db;
  border-right: 1px solid #3498db;
  border-bottom: 1px solid #3498db;
}

.content {
  flex: 70%;
  background-color: white;
  padding: 20px;
}

.sidebar {
  flex: 30%;
  background-color: #f1f1f1;
  padding: 20px;
}

.footer {
  padding: 1px;
  text-align: center;
  background: #ddd;
  border-left: 1px solid #3498db;
  border-right: 1px solid #3498db;
  border-bottom: 1px solid #3498db;
  font-size: 12px;
}

@media screen and (max-width: 768px) {
  .main,
  .navbar {
    flex-direction: column;
  }
}