#keyword_search {
  width: 500px;
  margin: 0 auto 30px auto;
}

#keyword_search_description {
  font-size: 1.1em;
}

#keyword_search .input_keyword {
  width: 360px;
  height: 1.4em;
  margin-right: 0.5em;
}

#keyword_search .submit_button {
  width:100px;
  vertical-align: baseline;
}