.mainSection {
  display: block;
  position: relative;
  font-size: 0;
}
@media (max-width: 978px) {
  .mainSection {
    margin-bottom: 20px;
  }
}
.bal-container {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.bal-after {
  display: block;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.bal-before {
  display: block;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 15;
  overflow: hidden;
}
.bal-before-inset {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
}
.bal-after img,
.bal-before img {
  object-fit: cover;
  position: absolute;
  width: 100%;
  height: 100%;
  object-position: 50% 50%;
  top: 0;
  bottom: 0;
  left: 0;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -o-user-select: none;
  user-select: none;
}
.bal-after video,
.bal-before video {
  object-fit: cover;
  position: absolute;
  width: 100%;
  height: 100%;
  object-position: 50% 50%;
  top: 0;
  bottom: 0;
  left: 0;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -o-user-select: none;
  user-select: none;
}
.bal-beforePosition {
  background: #121212;
  color: #fff;
  left: 0;
  pointer-events: none;
  border-radius: 0.2rem;
  padding: 2px 10px;
}
.bal-afterPosition {
  background: #121212;
  color: #fff;
  right: 0;
  pointer-events: none;
  border-radius: 0.2rem;
  padding: 2px 10px;
}
.beforeLabel {
  position: absolute;
  bottom: 0;
  margin: 1rem;
  font-size: 12px;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -o-user-select: none;
  user-select: none;
  display: none;
}
.afterLabel {
  position: absolute;
  bottom: 0;
  margin: 1rem;
  font-size: 12px;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -o-user-select: none;
  user-select: none;
  display: none;
}
.bal-handle {
  height: 30px;
  width: 30px;
  position: absolute;
  left: 50%;
  top: 50%;
  margin-left: -15px;
  margin-top: -15px;
  border-radius: 1000px;
  z-index: 20;
  /* pointer-events: none; */
  box-shadow: 0 0 10px #0c0c0c;
}
.handle-left-arrow,
.handle-right-arrow {
  display: none;
}
.handle-left-arrow {
  display: block;
  width: 30px;
  height: 30px;
  background: url(../images/index/change-icon.svg) center no-repeat;
  background-size: 100% 100%;
}
.handle-right-arrow {
  border-left: 6px solid #fff;
  right: 50%;
  margin-right: -17px;
}
.bal-handle::before {
  bottom: 50%;
  margin-bottom: 15px;
  box-shadow: 0 0 10px #0c0c0c;
}
.bal-handle::after {
  top: 50%;
  margin-top: 15px;
  box-shadow: 0 0 5px #0c0c0c;
}
.bal-handle::before,
.bal-handle::after {
  content: " ";
  display: block;
  width: 2px;
  background: #fff;
  height: 9999px;
  position: absolute;
  left: 50%;
  margin-left: -1.5px;
}