html,body {
  width: 100%;
  height: 100%;
  margin: 0px;
  padding: 0px;
  overflow: hidden;
}
.container {
  background: rgba(255, 255, 255, 0.5);
  padding: 3px;
}
form {
  float: left;
}
.sozai {
  position: aboslute;
  display: block;
  bottom: 0px;
  height: 100%;
}
#tweet {
  margin-left: 4em;
  float: left;
}
.clear {
  clear: both;
}