CSS image alignment difference between firefox and chrome - css

Question

I can't get my images to align correctly between all browsers:
I'm wondering if it's a border issue?
Question: would the best way to resolve this be to create a media query? Right now I sort of try to find a good middle ground, but when viewed on a safari mobile app, those few pixels make a big difference. Or is there a better way to contain the image between the .mnhouse, .mnsenate, .ushouse, .ussenate1, .ussenate2 divs?
Here is my relevant HTML:
<div id="officials">
<div class='mnhouse'>
<div class="membersublist">
<div class="memberLink"><span id="mnhouselink">Show District <i class="fa fa-external-link-square"></i></span></div>
<div id='housemember' class='lcc_gis_member'></div>
<div id='housedistrict' class='lcc_gis_memberdistrict'></div>
</div>
<img id='housephoto' class='mnhouse_img' src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=" width="0" height="0" alt=""/>
</div>
<div class='mnsenate'>
<div class="membersublist">
<div class="memberLink"><span id="mnsenlink">Show District <i class="fa fa-external-link-square"></i></span></div>
<div id='senatemember' class='lcc_gis_member'></div>
<div id='senatedistrict' class='lcc_gis_memberdistrict'></div>
</div>
<img id='senatephoto' class='mnsenate_img' src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=" width="0" height="0" alt=""/>
</div>
</div>
And here is my relevant CSS:
#officials img {
height: 100%;
min-height: 87px;
max-width: 65%;
position: relative;
top: -56px;
border:none;
}
.membersublist{
margin-top:15px;
}
.mnhouse, .mnsenate, .ushouse, .ussenate1, .ussenate2 {
height:87px;
background-color: #e6e6e6;
border-top: 1px solid #a7a5a6;
border-right: 1px solid #a7a5a6;
border-bottom: 1px solid #a7a5a6;
border-left: 3px solid #a7a5a6;
}
Here is the demo, in case I miss any relevant code (you need to select a point on the map to open the results).

Answer 1

The issue is your use of negative relative positioning to try to line it up.
#officials img {
...
position: relative;
top: -56px;
...
}
Basically you are positioning it relative to the offset created be the text, which can never be counted upon to be 100% consistent across browsers.
Instead, consider adding positioning to .mnhouse wrapper, and then using absolute positioning to position the images.
.mnhouse {
position: relative;
}
#officials img {
height: 100%;
min-height: 87px;
max-width: 65%;
position: absolute;
top: 0;
border:none;
}