CSS

on hover display another div css

.showme {
  display: none;
}

.showhim:hover .showme {
  display: block;
}


<div class="showhim">HOVER ME
  <div class="showme">hai</div>
</div>

can you control another div on hover css

#a:hover + #b {
    background: #ccc
}

<div id="a">Div A</div>
<div id="b">Div B</div>

css can I move element in another div when hover on another

.hover {
  background-color: blue;
  padding: 8px;
}

.move {
  background-color: red;
  padding: 8px;
  transition: 0.5s;
}

.hover:hover ~ .move {
  margin-top: 48px;
}