css selector for sibling element

/* Paragraphs that come immediately after any image */
img + p {
  font-weight: bold;
}

/*
Adjecent Sibling Selector
-------------------------
example: Select all <p> tags that immediatly follows after <div> tag
*/
div + p {
  background-color: yellow;
}

/*
General Sibling Selector
-------------------------
example: Select all <p> tags that has a sibling with a <div> tag
*/
div ~ p {
  background-color: yellow;
}