.crosshair {
    display: block;
    position: relative;
    overflow: hidden;
    max-width: 500px;
    max-height: 251px;
}
.crosshair .hair {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    margin-top: -3px;
    margin-left: -2px;
    background: transparent;
    border-top: 3px solid black;
    border-left: 3px solid black;
    pointer-events: none;
    z-index: 2;
    opacity: 0.5;
}
.crosshair .hair.hair-vertical {
    height: 100%;
}
.crosshair .hair.hair-horizontal {
    width: 100%;
}
.crosshair .crosshair-legend,
.crosshair .crosshair-marker {
    display: block;
    position: absolute;
}
.crosshair .crosshair-legend {
    top: 0;
    left: 0;
    background-color: black;
    background-color: rgba(0, 0, 0, 0.4);
    color: white;
    font-size: 10px;
    padding: 3px;
}
.crosshair .crosshair-marker {
    width: 30px;
    height: 30px;
    -webkit-transition: all ease-in-out 0.2s;
    -moz-transition: all ease-in-out 0.2s;
    -o-transition: all ease-in-out 0.2s;
    transition: all ease-in-out 0.2s;
    opacity: 1;
}