.bigbox{
    width: 100%;
    border: 2px solid yellowgreen;
    padding: 1em 1em 0 1em;
    position: relative;
    min-height: 400px;
}
.box{
    width: 32%;
    height: 150px;
    background-color: yellowgreen;
    margin: 0 2% 2% 0;
    overflow:auto;
}
.relative{
    position: relative;
}
.absolute{
    position: absolute;
    bottom: -40px;
    right: -40px;
}
.fixed{
    position: fixed;
}
.sticky{
    position: sticky;
    top: 0;
}