aside {
  text-align: right;
}

header {
  margin-left: 20px;
}

a#title {
  font-size: 2rem;
  color: #228b22;
  letter-spacing: 0.1rem;
  text-decoration: none;
  margin-right: 0.5rem;
}

.description {
  width: 80%;
  margin: auto;
}

.container {
  display: flex;
}

.side {
  width: 20%;
}

.side10 {
  width: 10%;
}

.contents {
  width: 80%;
}

.body {
  background-color: #ffffff;
  max-width: 800px;
  margin: auto;
}


body {
  background-color: #ccffcc;
}


.tweetbottun {
  text-decoration: none;
  background-color: #00aced;
  color: white;
  font-size: 75%;
}

.privacy {
  color: gray;
  font-size: 70%;
}