What is the correct CSS syntax for making all the <span> elements bold ?

1. span {text-size:bold}
2. span {font-weight:bold}
3. <span style="font-size:bold">
4. <span style="text-size:bold">

In the following code snippet, what value is given for the left margin :

margin: 5px 10px 3px 8px;

1. 3px
2. 10px
3. 8px
4. 5px

Which is the correct CSS syntax ?

1. {p:color=black(p}
2. p {color: black;}
3. {p;color:black}
4. p:color=black

What is the correct CSS syntax to change the font name ?

1. font-name:
2. font:
3. font-family:
4. fontname: