.p_btn_wrap {
  margin: 50px 0;
}

.p_btn {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  text-align: center;
}

.p_btn a {
  display: block;
  width: 85%;
  padding: 20px;
  margin-bottom: 25px;
  background-color: #000;
  color: #fff;
  font-size: 1.6rem;
  transition: background-color 0.3s ease;
}

.p_btn a:hover,
.p_btn a:active {
  background-color: #444;
}

@media (min-width: 1200px) {
  .p_btn_wrap {
    min-height: calc(50vh - 195px);
    margin: 50px 0;
    padding-top: calc((50vh - 145px)/2 - 10vh);
  }

  .p_btn {
  margin-bottom: 30px;
}

  .p_btn a {
    display: block;
    width: 28%;
    padding: 20px;
    margin-bottom: 0px;
  }
}