.twitlogin {
  display: inline-block;
  padding: 0.5em 1em;
  text-decoration: none;
  color: #FFF;
  background: #03A9F4;/*色*/
  border: solid 1px #0f9ada;/*線色*/
  border-radius: 4px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2);
  text-shadow: 0 1px 0 rgba(0,0,0,0.2);
}

.twitlogin {
  /*押したとき*/
  border: solid 1px #03A9F4;
  box-shadow: none;
  text-shadow: none;
}