Display element outside the nested div while visibility stays hidden

问题

I want to achieve this. Keep an eye on the top text 'Happy Fruit'. I want to be overlayed of the box while it's nested inside it.

body {
  background: yellow;
  padding: 50px;
}
.slider {
    width: 100%;
    height: 650px;
    margin-top: 40px;
    background: orange;
    box-shadow: 0 0 78px 11px #F3286B;
}
h1, h2 {
  text-transform:uppercase;
  color: red;
}
h1 {
  font-size: 11vw;
}
h2 {
  font-size: 7vw;
}

<body>
<div class="slider">
<h1>
Happy Fruit
</h1>
<h2>
HELLO WORLD
</h2>
</div>
</body>

If I then go and add a margin-top: -50px; to the h1 the text will stay inside the div, but how can I make it going above/standing on it on it while it's still being nested inside (html)? I've tried playing with z-index but that didn't work.

position: relative; top: -50px;

The .slides has overflow: hidden; because if it is on overflow:visible; the other slides of the slider will show up, like this.

回答1:

Issue is because of collapsing margin.

Add border: 1px solid transparent; to slider class and give margin-top in negative to h1 tag like -40px, as in the code solution below.

body {
  background: yellow;
  padding: 50px;
}
.slider {
    width: 100%;
    height: 650px;
    margin-top: 40px;
    background: orange;
    box-shadow: 0 0 78px 11px #F3286B;
    border: 1px solid transparent;
}
h1, h2 {
  text-transform:uppercase;
  color: red;
}
h1 {
  font-size: 11vw;
  margin-top: -40px;
}
h2 {
  font-size: 7vw;
}

<body>
<div class="slider">
<h1>
Happy Fruit
</h1>
<h2>
HELLO WORLD
</h2>
</div>
</body>

来源：https://stackoverflow.com/questions/45420825/display-element-outside-the-nested-div-while-visibility-stays-hidden

标签

html

css

overflow

css-position

positioning