.btn_ {
  display: block;
  float: left;
  height: 42px;
  line-height: 42px;
  color: #fff !important;
  text-align: center;
  text-transform: uppercase;
  border: 1px solid $blue-color;
  background: $blue-color;
  padding: 0 11px 0 11px;
  text-decoration: none !important;
  position: relative;
  border-radius: 2px;
  width: 172px;
  max-width: 100%;
  font-weight: 700;
  @include Transition(0.2);
  &:hover {
    background: $blue-color-hover;
    border: 1px solid $blue-color-hover;
  }
  &:active {
    background: $blue-color-active;
    border: 1px solid $blue-color-active;
  }

  &.add-book {
    background: $green-color;
    border: 1px solid $green-color;
    span {
      position: relative;
      padding-left: 35px;

      &:before {
        width: 20px;
        height: 24px;
        background: url("../images/ico/icon_book_01.svg");
        background-size: 20px 24px;
        background-repeat: no-repeat;
        position: absolute;
        left: 0;
        top: 50%;
        margin-top: -12px;
        content: '';
      }
    }
    &:hover {
      background: $green-color-hover;
      border: 1px solid $green-color-hover;
    }
    &:active {
      background: $green-color-active;
      border: 1px solid $green-color-active;
    }
  }
}