Padding with position absolute

Trick to set top and left at 0 but still have padding applied from parent element.

by Matthew Day

HTML

<div class="parent">
    <div class="child">Hello World!</div>
</div>

CSS

* {
    box-sizing: border-box;
}
.parent {
    position: relative;
    width: 200px;
    height: 100px;
    padding: 20px;
    border: 1px solid blue;
}

.parent .child {
    position: absolute;
    top: 0;
    left: 0;
    padding: 20px;
    border: 1px solid red;
}