calendar not displaying properly in widgetized sidebar

Hi,
I’m using the widgetized fSpring theme and the calendar doesn’t display properly. The result is that it pushes the sidebar from the right side to the bottom of all the content and to the left side. I changed the style.css of my theme, but I’m sure there’s enough space for the calendar to display. Any idea what could cause that?
Hereunder is an extract of the my style.css, I changed the size of the content to 500px and the sidebar to 200px when the original mesurements were 484px for the content and 238px for the sidebar. But even when I reset teh original mesurements the calendar still doesn’t display properly.

#content {
width: 500px;
float: left;
display:inline;
text-align: justify;
padding: 10px;
margin: 8px;
}
#nav {
height: 49px;
width: 790px;
margin-right: auto;
margin-left: auto;
}

#sidebar {
width: 200px;
float: left;
line-height: 1.5em;
display:inline;
margin: 8px 8px 8px 0px;
padding: 10px;
font-size:10px;