<style>
.first {
    width: 100px;
    margin-top: 100px;
    outline: 5px solid blue;
}

.second {
    width: 100px;
    height: 100px;
    outline: 5px solid blue;
    position: relative;
    top: 20px
}
</style>
<div class=first></div><div class=second></div>