.resizable {
    position: relative;
}
.resizable .resizer {
    position: absolute;
}
.resizable .resizer-r {
    cursor: col-resize;
    height: 100%;
    right: 0;
    top: 0;
    width: 5px;
    background: grey;
}
.resizable .resizer-b {
    bottom: 0;
    cursor: row-resize;
    height: 5px;
    left: 0;
    width: 100%;
    background: grey;
}