सीएसएस/एचटीएमएल - फोकस स्वचालित रूप से किसी भी कारण से इनपुट फ़ील्ड छोड़ देता है

I've got a form laid out using the CSS below. Mostly it works well, but whenever there are two input fields with the tags I cannot click to select the second field. If you click the 1st input field it's fine. If you click into the 2nd input field it automatically jumps focus back to the first one. However, you can tab between the two successfully.

div.largeblock{
    margin:5px 0px 20px 0px;
    background:#d7e5f2;
    border:1px solid #d7e5f2;
}
div.largeblock label{
    display:block;
    margin-bottom:5px;
}
div.largeblock label span{
    display:block;
    float:left;
    margin-right:6px;
    width:130px;
    text-align:right;
}

I have the same problem where I have a