I found the button to collapse too high, so I literally added the following in the additionalcss which aligns it perfect in the middle of the block:
Full code (additionalcss)
Code:
.wgo_block .blockhead a.collapse {
position: absolute;
top: {vb:math {vb:math {vb:math {vb:stylevar padding}+{vb:math {vb:stylevar mid_fontSize}*{vb:stylevar line_height}}-13}/2}+1};
}
.wgo_block .blockhead a.collapse img {
/* values are based on the image */
position:absolute;
{vb:stylevar right}: -{vb:math {vb:stylevar padding} * 0.6};
display:block;
width:13px;
height:13px;
overflow:hidden;
top:-5px;
float: {vb:stylevar right};
clear: {vb:stylevar left};
}