@asi-ngtools/lib/styles/less/asi-collapse.less

This project is a little components library, simple to use, which will help you to simplify your project.

asi-collapse, .asi-collapse {
  display: flex;
  flex-direction: column;
  flex: 0 0 auto;
  .collapse-header {
    .clean-button;
    outline: none;
    &:focus {
      border-bottom: @asi-collapse-outline-border;
    }
    &:hover {
      background-color: @asi-collapse-header-hover-background-color;
      &:not([disabled]) {
        color: @asi-collapse-header-hover-color;
      }
    }
    min-height: 40px;
    font-size: 20px;
    background-color: @asi-collapse-header-background-color;
    &:not([disabled]) {
      color: @asi-collapse-header-color;
    }
    box-shadow: 0px 0px 1px white;
    padding-left: 10px;
    margin-bottom: 1px;
  }
  .collapse-panel {
    border: @asi-collapse-panel-border;
    background-color: @asi-collapse-panel-background-color;
    padding-top: 5px;
    overflow: hidden;
    padding-left: 10px;
    margin-top: 5px;
    margin-bottom: 5px;
  }
}