Happy birthday, Raffaele Cecco!

HTML + ES6, 200 bytes

<pre id=o><script>setInterval(_=>o.innerHTML=(f=k=>k--?f(k)+(k<11?s[k]:k>47?s[74-k]:k%12?++k%12?' ':s[10+k/12]+`
`:s[30-k/12]):'')(60,s=s.slice(1)+s[0]),99,s="Happy birthday Raffaele Cecco ")</script>

ZX Spectrum BASIC, 187 bytes

Annoyed that Philip beat me to it by a couple of minutes :-) Numbers like \{15} are unprintable control codes - compile with zmakebas if you want to tinker. Note that the full rectangle isn't printed immediately, but it falls into place after the first few frames.

1 let a$=" Happy birthday Raffaele Cecco":dim b$(code"\{15}"):dim c$(pi*pi)
3 let b$=a$(sgn pi)+b$:let a$=a$(val"2" to)+a$(sgn pi):print "\{0x16}\{0}\{0}";a$(to code"\{12}")'b$(sgn pi);c$;a$(val"13")'b$(val"2");c$;a$(code"\{14}")'b$(pi);c$;a$(len b$)'b$(val"4" to):go to pi

Try it here (online JS-emulated version, press enter to start)... http://jsspeccy.zxdemo.org/cecco/

You can also save four bytes by clearing the screen between frames instead of doing a PRINT AT, but it's too flickery to be worth it...

1 let a$=" Happy birthday Raffaele Cecco":dim b$(code"\{15}"):dim c$(pi*pi)
3 let b$=a$(sgn pi)+b$:let a$=a$(val"2" to)+a$(sgn pi):cls:print a$(to code"\{12}")'b$(sgn pi);c$;a$(val"13")'b$(val"2");c$;a$(code"\{14}")'b$(pi);c$;a$(len b$)'b$(val"4" to):go to pi

V, 75 71 70 bytes

4 bytes saved thanks to @DJMcMayhem

iHappy birthd
±± a
o±° y
c±± 
ceC eleaffaR6ògÓÉ {dêjP2Ljjx1Lp5LxkpGd

Here is a TIO link, but note that this will not work on TIO because the program loops infinitely. Try it online!

Since this code contains unprintables, here is a hexdump.

00000000: 6948 6170 7079 2062 6972 7468 640a b1b1  iHappy birthd...
00000010: 2061 0a6f b1b0 2079 0a63 b1b1 200a 6365   a.o.. y.c.. .ce
00000020: 4320 656c 6561 6666 6152 1b36 f267 d3c9  C eleaffaR.6.g..
00000030: 207b 64ea 6a50 324c 166a 6a78 314c 7035   {d.jP2L.jjx1Lp5
00000040: 4c78 6b70 4764                           LxkpGd

The sleep time is 500 milliseconds.