Visibility Toggle using pure CSS

fiddle.css

.toggle {
  margin: 0 auto;
  max-width: 400px;
}

.toggle-label {
  font-size: 16px;
  background: #fff;
  padding: 1em;
  cursor: pointer;
  display: block;
  margin: 0 auto 1em;
  box-shadow: 0 1px 2px 0 rgba(153, 153, 153, 0.35);
  border-radius: 4px;
  
  &:after {
    color: #ED3E44;
    content: "+";
    float: right;
    font-weight: bold;
  }
}

.toggle-content {
  color: #B0B3C2;
  font-family: monospace;
  font-size: 16px;
  margin-bottom: 1.5em;
  padding: 1em;
}

.toggle-input {
  display: none;
  
  &:not(checked) ~ .toggle-content {
    display: none;
  }
}

.toggle-input:checked {
  ~ .toggle-content {
    display: block;
  }
  
  ~ .toggle-label {
    &:after {
      content: "-";
    }
  }
}

fiddle.html

<div class="toggle">  
  <input type="checkbox" value="selected" id="beethoven-joke" class="toggle-input">
  <label for="beethoven-joke" class="toggle-label">What was Beethoven's favorite fruit?</label> 
  
  <div role="toggle" class="toggle-content">
    BA-NA-NA-NA!
 </div>
</div>

<div class="toggle">  
  <input type="checkbox" value="selected" id="army-joke" class="toggle-input">
  <label for="army-joke" class="toggle-label">Where did the general put his armies?</label> 
  
  <div class="toggle-content">
    Up his sleevies!
 </div>
</div>

<div class="toggle">  
  <input type="checkbox" value="selected" id="pepper-joke" class="toggle-input">
  <label for="pepper-joke" class="toggle-label">What do you call a nosy pepper?</label> 
  <div role="toggle" id="beethoven-joke" class="toggle-content">
    Jalapeño business!
 </div>
</div>