* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: sans-serif;
  background: #f0f0f0;
  color: #333;
}

header img 
{
  width: 100%;
  height: 120px;
  object-fit: cover;
  
}
header p
{
  position: absolute;
  top:80px;
  left:10%;
}
header h2
{
  position: absolute;
  top:30px;
  left:10%;
  color: Red;
}
header b
{
  position: absolute;
  top:70px;
  left:10%;
  color: White;    
}
nav {
  background: #004466;
  color: white;
  position: relative;
}

nav ul {
  display: flex;
  list-style: none;
  justify-content: center;
}

nav ul li a {
  display: block;
  padding: 5px 20px;
  color: white;
  text-decoration: none;
}

nav ul li a:hover {
  background: #006699;
}
nav ul li a.current {
  background: #00aaff;
  font-weight: bold;
}
.menu-toggle {
  display: none;
  padding: 15px;
  cursor: pointer;
  font-size: 24px;
}
.main .content {
  max-width: 800px;
  margin: 10px auto;
  padding: 10px;
  background: white;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

footer {
  background: #222;
  color: white;
  text-align: center;
  padding: 10px;
  margin-top: 10px;
}

/* スマホ対応 */
@media (max-width: 768px) {
  nav ul {
    display: none;
    flex-direction: column;
    background: #004466;
  }

  nav ul.active {
    display: flex;
  }

  .menu-toggle {
    display: block;
    text-align: right;
    padding-right: 20px;
  }
}