.gwp_collapse .gfield_description:not(.validation_message) {
    display: none;
}
.gwp_collapse_open .gfield_description, .gwp_collapse_open.gwp_collapse .gfield_description {
    display: block;
}

.gwp_collapse_action {
    display: inline-block;
    float: right;
    text-decoration: none;
}
.gwp_collapse_action span {
    font-size: 1.5em;
}
.gwp_collapse_open .ginput_container .gwp_collapse_action {
    display: none;
}