Wtf html

i was trying to set up a new template, and when I put the html code into the html editor on blogspot, it gave me and xml error saying that something didnt need a space between something else. So then I went to another blog that is on here, just a random one by clicking Next Blog, and copied the html code and tried that code, and i got another error saying that the head needed a matching tag, so i searched through all the code, and there was a head> and also a /head>! So then i went to another blog, did the same, got another different compiling error! WTF! If the html loads a site, it will load a site! there is something very wrong with the html compiler on here, and this Is a Formal Complaint!