zyAdmin/node_modules/vxe-pc-ui/styles/components/layout-aside.scss

.vxe-layout-aside {
  position: relative;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width .3s;
  overflow: hidden;
  &.is--default-width {
    width: var(--vxe-ui-layout-aside-default-width);
  }
  &.is--collapse {
    width: var(--vxe-ui-layout-aside-collapse-width);
  }
  &.is--padding {
    padding: var(--vxe-ui-layout-padding-default);
  }
}
.vxe-layout-aside--inner {
  flex-grow: 1;
  overflow-y: auto;
  overflow-x: hidden;
  outline: 0;
}