.block--category .block-container {
    background: transparent!important;
    border-width: 0;
}
.block-header {
    border-radius: 4px;
    margin-bottom: 4px;
}
.node--forum {
    background-color: #fff;
    border-width: 0;
	    border-radius: 4px;
    margin-bottom: 4px;
}