.oe {
  padding-top: 50px;
  width: 1280px;
  margin: 0 auto;
}
.oe-button a {
  background: #000;
  display: flex;
  width: calc(25% - 10px);
  color: #fff;
  height: 48px;
  align-items: center;
  justify-content: center;
  float: left;
  margin-right: 10px;
  border: 1px solid #000;
  box-sizing: border-box;
  text-decoration: none;
  border-radius: 3px;
  cursor: pointer;
}
.oe-button a > img {
  width: 32px;
}
.oe-button a > span {
  padding-left: 10px;
}
.oe-button .white {
  background: #fff;
  color: #000;
}
.tips {
  width: 200px;
  padding: 8px;
  background: #000;
  color: #fff;
  position: fixed;
  text-align: center;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 3px;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
  display: none;
}
.tips > img {
  width: 15px;
  height: 15px;
}
.tips span {
  padding-left: 10px;
}
@media screen and (max-width: 750px) {
  .oe {
    width: 100%;
    padding-top: 20px;
  }
  .oe-button a {
    width: 100%;
    margin-bottom: 10px;
  }
}