Node width and height not needed in style.css?

Node content displayed in a page was forced to 300x500. But when actual content is bigger the text spilled outside of the node area. The result is that the text covered the copyright area in an ugly way.

I fixed it by removing the width and height css directive. I do not know if this the right solution but it seems to work on chrome.

Please verify this problem and/or fix.

This css:

/* Homepage
------------------------------------------------*/
.node {
margin-bottom: 40px;
margin-right: 20px;
float: left;
width: 300px;
height: 500px;
}

Became this css:

/* Homepage
------------------------------------------------*/
.node {
margin-bottom: 40px;
margin-right: 20px;
float: left;
}