body {
  background: url("../img/bg_03.jpg") top center fixed no-repeat;
}
@media only screen and (max-width: 767px) {
  body {
    background: url("../img/bg_03_mobile.jpg") top fixed no-repeat;
  }
}
.btn-office {
  margin: 1rem 0;
  justify-content: start;
  align-items: center;
  background: linear-gradient(#F9F9F9, #d1d1d1);
  border: 1px solid #bbb;
  padding: 1.2rem 1rem;
}
.btn-office:hover {
  background: linear-gradient(#e9e9e9, #c7c7c7);
}
.office-icon-wrapper {
  flex-shrink: 0;
  height: 3.8rem;
  width: 3.8rem;
  background-color:#2793BD;
  margin-right: 1rem;
  border-radius: 50%;
}
.office-icon-wrapper .iconfont {
  color: #fff;
  font-size: 2.1rem;
  line-height: 3.7rem;
}
.office-text {
  text-align:left;
  flex-grow: 1;
  color:#2793BD;
  font-size: 1.2rem;
}
#mainContent .container {
  margin-top: 10rem;
}
@media only screen and (max-width:767px) {
#mainContent .container {
  margin-top: 3rem;
}
.btn-office {
  margin: 0;
}
}