.nova-collapse-container {
  position: relative;
  overflow: hidden;
}
.nova-collapse-container .nova-collapse-sider {
  position: absolute;
  transform: translateZ(0);
  transition: all 0.3s ease 0s;
  height: 100%;
  box-sizing: border-box;
  background: #fff;
  border-right: 1px solid #ebebeb;
}
.nova-collapse-container .nova-collapse-sider .nova-collapse-sider__content {
  opacity: 1;
  transition: all 0.3s ease 0s;
}
.nova-collapse-container .nova-collapse-sider .nova-collapse-sider__icon {
  position: absolute;
  right: 0;
  transform: translateY(-50%);
  cursor: pointer;
}
.nova-collapse-container .nova-collapse-sider .nova-collapse-sider__icon > div {
  transform: rotateY(0);
}
.nova-collapse-container .nova-collapse-sider .nova-collapse-sider__icon img {
  display: block;
}
.nova-collapse-container .nova-collapse-sider .nova-collapse-sider__icon--center {
  top: 50%;
}
.nova-collapse-container .nova-collapse-sider .nova-collapse-sider__icon--bottom {
  bottom: 16px;
  transform: translateY(0);
}
.nova-collapse-container .nova-collapse-sider.nova-collapse-sider--collapsed {
  transition: all 0.3s ease 0s;
}
.nova-collapse-container .nova-collapse-sider.nova-collapse-sider--collapsed .nova-collapse-sider__icon--rotate {
  transform: rotateY(180deg);
}
.nova-collapse-container .nova-collapse-sider.nova-collapse-sider--collapsed .nova-collapse-sider__icon--bottom .nova-collapse-sider__icon--rotate {
  transform: rotateY(180deg);
}
.nova-collapse-container .nova-collapse-sider.nova-collapse-sider--collapsed .nova-collapse-sider__content {
  opacity: 0;
}
.nova-collapse-container .nova-collapse-main {
  height: 100%;
  background: #fff;
}
.nova-collapse-container .nova-collapse-main.nova-collapse-main--collapsed {
  margin-left: 40px !important;
}
.nova-collapse-container--smooth {
  display: flex;
}
.nova-collapse-container--smooth .nova-collapse-sider {
  position: relative;
  height: auto;
}
.nova-collapse-container--smooth .nova-collapse-sider.nova-collapse-sider--collapsed {
  width: 40px !important;
  transform: translateX(0);
}
.nova-collapse-container--smooth .nova-collapse-main {
  overflow: hidden;
  height: auto;
  flex: 1;
  background: #fff;
}
.nova-collapse-container--smooth .nova-collapse-main.nova-collapse-main--collapsed {
  margin-left: 0 !important;
}