.cadastro div{
    float:left;
    margin:0 10px 10px 0;
    height: 45px;
    padding: 0;
}

.cadastro  h2{
    clear: both;
    background: #E3E3E3;
    padding: 5px;
    background: transparent url('{url_imagens}tira-h2.jpg') repeat-x;
}

.cadastro  .caixa{
    border:1px solid #CCCCCC;
    float: none;
    height: auto;
    padding: 10px;
    margin: 0;
    margin-bottom: 20px;
    border-radius:8px;
}