Text doesn’t wrap around images

If you have a custom theme you need really need to save the code from the standard theme stylesheet to the custom one.

/* -------------------------------------------------------------- 

   Basic WordPress Blog Styles   

-------------------------------------------------------------- */   

/* Images
-------------------------------------------------------------- */

.entry-content img {
	margin: 0 0 1.5em 0;
}
.alignleft,
img.alignleft {
	display: inline;
	float: left;
  margin-right: 1.5em;
}
.alignright,
img.alignright {
	display: inline;
	float: right;
  margin-left: 1.5em;
}
.aligncenter,
img.aligncenter {
	clear: both;
	display: block;
	margin-left: auto;
	margin-right: auto;
}
.wp-caption {
	text-align: center;
	margin-bottom: 1.5em;
}
.wp-caption img {
	border: 0 none;
	margin: 0;
	padding: 0;
}
.wp-caption p.wp-caption-text {
	margin: 0;
}
.wp-smiley {
	max-height: 1em;
	margin:0 !important;
}
.gallery dl {
	margin: 0;
}
.gallery-caption {
	margin:-1.5em 0 0 0;
}

/* Pullquotes
-------------------------------------------------------------- */

blockquote.left {
	float: left;
	margin-left: 0;
	margin-right: 20px;
	text-align: right;
	width: 33%;
}
blockquote.right {
	float: right;
	margin-left: 20px;
	margin-right: 0;
	text-align: left;
	width: 33%;
}

My text doesn’t wrap around either in no way. I have a custom theme.
http://www.videofotomatrimonio.com

You can see the same problem with the 2 images as numbers.

The other problem is when I highlight some text with yellow background (see website), the font gets reduced and I can’t find a way to make it as big as the rest of text. I tried this:
<span style=”font-size: x-large;”>

but it gets too large.

Thanks!