.main {
  height: 340px;
  background-image: url("/static/imgs/history_bg_mb.png");
  background-size:auto;
  background-position: center 0;
  background-repeat: no-repeat;
  background-attachment:local;
  color: #fff;
  display: table;
}
.big-font {
  font-size: 3rem;
}

.main > div {
  display: table-cell;
  vertical-align: middle;
}

@media (min-width: 768px) {
  .main {
    background-image: url("/static/imgs/history_bg_pc.png");
  }
  .big-font {
    font-size: 4rem;
  }
}

.timeline {
  list-style: none;
  padding: 20px 0 20px;
  position: relative;
}
.timeline:before {
  top: 0;
  bottom: 0;
  position: absolute;
  content: " ";
  width: 2px;
  background-color: #ccc;
  left: 50%;
  margin-left: -1px;
}
.timeline > li {
  margin-bottom: 20px;
  position: relative;
}
.timeline > li:before,
.timeline > li:after {
  content: " ";
  display: table;
}
.timeline > li:after {
  clear: both;
}
.timeline > li:before,
.timeline > li:after {
  content: " ";
  display: table;
}
.timeline > li:after {
  clear: both;
}
.timeline > li > .timeline-panel {
  width: 46%;
  float: left;
  border: 1px solid #ccc;
  border-radius: 2px;
  padding: 20px;
  position: relative;
  -webkit-box-shadow: 0 1px 6px rgba(0, 0, 0, 0.175);
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.175);
  top: 18px;
  /* min-width: 150px; */
}

.timeline > li:nth-child(odd) > .timeline-panel:before {
  position: absolute;
  top: -15px;
  left: 26px;
  display: inline-block;
  border-left: 15px solid transparent;
  border-right: 15px solid transparent;
  border-bottom: 15px solid #dad9d8;
  content: " ";
}

.timeline > li:nth-child(odd) > .timeline-panel:after {
  position: absolute;
  top: -14px;
  left: 27px;
  display: inline-block;
  border-left: 14px solid transparent;
  border-right: 14px solid transparent;
  border-bottom: 14px solid #dad9d8;
  content: " ";
}

.timeline > li:nth-child(even) > .timeline-panel:before {
  position: absolute;
  top: -15px;
  right: 26px;
  display: inline-block;
  border-left: 15px solid transparent;
  border-right: 15px solid transparent;
  border-bottom: 15px solid #dad9d8;
  content: " ";
}

.timeline > li:nth-child(even) > .timeline-panel:after {
  position: absolute;
  top: -14px;
  right: 27px;
  display: inline-block;
  border-left: 14px solid transparent;
  border-right: 14px solid transparent;
  border-bottom: 14px solid #dad9d8;
  content: " ";
}

.timeline > li > .timeline-badge {
  color: #fff;
  width: 16px;
  height: 16px;
  line-height: 16px;
  font-size: 1.4em;
  text-align: center;
  position: absolute;
  top: 4px;
  left: 50%;
  margin-left: -8px;
  background-color: #fff;
  z-index: 100;
  border-top-right-radius: 50%;
  border-top-left-radius: 50%;
  border-bottom-right-radius: 50%;
  border-bottom-left-radius: 50%;
  border-style: solid;
  border-color: brown;
  border-width: 4px;
}
.timeline > li.timeline-inverted > .timeline-panel {
  float: right;
}
.timeline > li.timeline-inverted > .timeline-panel:before {
  border-left-width: 15px;
  border-right-width: 15px;
  right: auto;
}
.timeline > li.timeline-inverted > .timeline-panel:after {
  border-left-width: 14px;
  border-right-width: 14px;
  right: auto;
}

.timeline > li:nth-child(even) > .timeline-time {
  /* position: relative; */
  font-weight: bolder;
  font-size: large;
  color: #000;
  text-align: center;
  padding-right: 10rem;
}

.timeline > li:nth-child(odd) > .timeline-time {
  /* position: relative; */
  font-weight: bolder;
  font-size: large;
  color: #000;
  text-align: center;
  padding-left: 10rem;
}

.timeline-badge.primary {
  background-color: #2e6da4 !important;
}
.timeline-badge.success {
  background-color: #3f903f !important;
}
.timeline-badge.warning {
  background-color: #f0ad4e !important;
}
.timeline-badge.danger {
  background-color: #d9534f !important;
}
.timeline-badge.info {
  background-color: #5bc0de !important;
}
.timeline-title {
  margin-top: 0;
  color: inherit;
}
.timeline-body > p,
.timeline-body > ul {
  margin-bottom: 0;
}
.timeline-body > p + p {
  margin-top: 5px;
}