.dt-button-collection {
    width: 300px !important;
}
.dt-button-collection button {
    float: left !important;
    width: 50% !important;
    margin-right: 5px;
}
div.dt-button-collection button.dt-button, div.dt-button-collection div.dt-button, div.dt-button-collection a.dt-button{
    margin: 0px 0 0px 0;
}