Гист для Жени

main.css.scss

#sb {
  display: block;
  width: 200px;
  height: 50px;
  border-radius: 4px;
  background: $blue;
  text-decoration: none;
  text-transform: uppercase;
  font-family: 'Microsoft Sans Serif', Tahoma, Arial, Verdana, Sans-Serif;
  border: 1px solid $blue;
  color: #fff;
  font-weight: bold;
  text-align: center;
  line-height: 30px + 20px;
  &:hover {
    background: $blue;
  }
}