The ornamental design for a desk with floatingtop, as shown and described.
FIG. 1 is a perspective view of a desk with floating top, showing our new design, the broken lines are for environmental purposes only and form no part of the claimed design;
FIG. 2 is a front view of the desk with floating top illustrated in FIG. 1;
FIG. 3 is a top view of the desk with floating top illustrated in FIG. 1;
FIG. 4 is a first side view of the desk with floating top illustrated in FIG. 1;
FIG. 5 is a second side view of the desk with floating top illustrated in FIG. 1;
FIG. 6 is a back view of the desk with floating top illustrated in FIG. 1; and,
FIG. 7 is a bottom view of the desk with floating top illustrated in FIG. 1.