.btnPrimary{
  width: 290px;
  display: block;
  margin: 70px auto 0;
  text-align: center;
  padding: 0;
  font-size: 14px;
  height: 55px;
  line-height: 53px;
  position: relative;
  text-decoration: none;
  border: 1px solid #ccc;
  color: #7a776a;
  font-weight: normal;
}

.btnPrimary::before {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-right: 1px solid #8e8c81;
  border-bottom: 1px solid #8e8c81;
  transform: rotate(135deg);
  left: 20px;
  top: 0;
  bottom: 0;
  margin: auto;
  transition: 0.4s;
}

.btnPrimary_border {
  position: absolute;
  width: 100%;
  height: 100%;
  display: block;
  top: 0;
  left: 0;
}

.btnPrimary_border::before, .btnPrimary_border::after {
  position: absolute;
  background-color: #7a776a;
  content: "";
}

.btnPrimary_right::before, .btnPrimary_left::before {
  width: 1px;
  height: 30px;
}

.btnPrimary_right::before, .btnPrimary_right::after {
  bottom: -1px;
  right: -1px;
}

.btnPrimary_left::before, .btnPrimary_left::after {
  top: -1px;
  left: -1px;
}

.btnPrimary_right::after, .btnPrimary_left::after {
  width: 70px;
  height: 1px;
}

@media screen and (max-width: 768px) {
  .btnPrimary {
    width: 240px;
    margin: 40px auto 0;
    font-size: 14px;
  }
}