.u-img-responsive {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
}
.u-img-circle {
  border-radius: 50%;
}
.u-unstyled-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.center-block {
  display: block;
  margin-left: auto;
  margin-right: auto;
}
.pull-right {
  float: right !important;
}
.pull-left {
  float: left !important;
}
.hide {
  display: none !important;
}
.show {
  display: block !important;
}
.invisible {
  visibility: hidden;
}
.text-hide {
  font: 0/0 a;
  color: transparent;
  text-shadow: none;
  background-color: transparent;
  border: 0;
}
.hidden {
  display: none !important;
}
.affix {
  position: fixed;
}
.u-vertical-align {
  display: table;
  width: 100%;
  height: 100%;
}
.u-align-middle {
  display: table-cell;
  vertical-align: middle;
}
.u-align-center {
  margin: 0 auto;
}
@media (max-width: 767px) {
  .u-vertical-align {
    display: block;
  }
  .u-align-middle {
    display: block;
  }
}