.mce-content-body .spoiler {
  margin-top: 5px;
  margin-bottom: 5px;
  padding: 5px 5px;
  border-left: 3px solid var(--color-gray-aaa);
}

.mce-content-body .spoiler[contentEditable='false'][data-mce-selected],
.mce-content-body .spoiler.mceNonEditable[data-mce-selected] {
  cursor: default;
}

.mce-content-body.mce-content-readonly .spoiler > .spoiler-toggle,
.mce-content-body.mce-content-readonly .spoiler > .spoiler-toggle * {
  cursor: pointer;
}

.mce-content-body .spoiler[data-mce-selected='1'] {
  outline: 1px solid var(--accent-color-bg);
  border-radius: 5px;
}

.mce-content-body .spoiler .spoiler-header.mceEditable {
  cursor: text;
}

.mce-content-body .spoiler.collapsed {
  border-left-color: transparent;
}

.mce-content-body .spoiler .spoiler-toggle {
  font-weight: bold;
  cursor: default;
  display: flex;
  flex-flow: row nowrap;
  gap: 5px;
  padding: 5px;
  align-items: flex-start;
}

.mce-content-body .spoiler .spoiler-toggle .spoiler-header p {
  margin: 0;
}

.mce-content-body .spoiler .spoiler-toggle > .spoiler-icon {
  flex: 0 0 auto;
  cursor: pointer;
  width: 20px;
  height: 20px;
  display: flex;
  background-color: var(--default-color);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6.41,9H17.59a1,1,0,0,1,.7,1.71l-5.58,5.58a1,1,0,0,1-1.42,0L5.71,10.71A1,1,0,0,1,6.41,9Z'/%3E%3C/svg%3E");
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6.41,9H17.59a1,1,0,0,1,.7,1.71l-5.58,5.58a1,1,0,0,1-1.42,0L5.71,10.71A1,1,0,0,1,6.41,9Z'/%3E%3C/svg%3E");
  -webkit-mask-position: center;
  mask-position: center;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  mask-size: contain;
}

.mce-content-body .spoiler .spoiler-text {
  padding: 5px;
  margin-left: 20px;
}

.mce-content-body .spoiler .spoiler-header {
  flex: 1 0 auto;
}

.mce-content-body .spoiler .spoiler-header:focus,
.mce-content-body .spoiler .spoiler-header:hover,
.mce-content-body .spoiler .spoiler-header:focus-visible,
.mce-content-body .spoiler .spoiler-text:focus,
.mce-content-body .spoiler .spoiler-text:hover,
.mce-content-body .spoiler .spoiler-text:focus-visible {
  outline: transparent;
}

/** 
* Нельзя display: none; visibility: hidden; height: 0; width: 0 
* т.к. в таком случае в буфер обмена не помещается содержимое
*/
.mce-content-body .spoiler.collapsed .spoiler-text {
  padding: 1px 0 0 0;
  margin: 0;
  height: 1px;
  overflow: hidden;
}

.mce-content-body .spoiler.collapsed .spoiler-icon {
  transform: rotate(-90deg);
}