.divBusca {
    width: 99.9%;
    border: 1px solid #C0CCD6;
    -moz-border-radius: 5px;
    border-radius: 5px;
    margin-bottom: 10px;
    background-color: #EAF3FB;
}

.divInterna {
    border: 1px solid #C0CCD6;
    margin: 5px;
    background-color: #fff;
    width: 98.8%;
    float:left;
}

    .divInterna div {
        float:left;
        margin-left:5px;
    }