body {
  font-family: Arial, sans-serif;
  background-color: #F4EBDA; /*クリーム*/
  color: #333;
  margin: 0;
  padding: 0;
}

h2 {
  color: #F4EBDA; 
  text-align: center;
  background-color: #A6B5A5;　/* 緑色 */
  padding: 0 20px;
}

a {
  color: #00796b;
  text-decoration: none;
  margin: 0 1em;
  text-align: center;
}

p {
  color: #00796b;
  text-decoration: none;
  margin: 0 1em;
}

a:hover {
  text-decoration: none;
}

.yohaku1 {
  width: 100%;
  height: 200px;
  background-color: #A6B5A5;
}

.link {
  text-align: center;
  margin: 30px;
}

.btn {
  background-color: #A6B5A5;
  color: #F4EBDA;
  padding: 10px 30px;
  text-decoration: none;
  font-size: 1em;
  outline: 1px solid;
  outline-color: #A6B5A5;
  outline-offset: 0px;
  display: inline-block;
  transition: .3s;
  border-radius: 10px;
}
.btn:hover {
  color: #262724;
  animation: light .8s infinite;
}
@keyframes light {
  100% { 
    outline-color: transparent;
    outline-offset: 10px;
  }
}