salix/client/core/src/drop-down/style.scss

vn-drop-down {
    position: absolute;
    z-index: 9999;
    padding: 0 15px;
    margin-left: -15px;
    background: transparent;
    ul{
        padding: 0;
        margin: 10px 0 0 0;
        background: white;
        border: 1px solid #A7A7A7;
        li {
            list-style-type: none;
            padding: 5px 10px;
            cursor: pointer;
            white-space: nowrap;
            &.filter{
                padding: 5px;
                input{
                    height: 25px;
                    padding-left: 5px;
                }
                vn-icon{
                    font-size: 16px;
                    position: absolute;
                    margin-left: -20px;
                    margin-top: 7px;
                }
            }
        }
        li:hover{
            background-color: #3D3A3B;
            color: white;
            &.filter{
                vn-icon{
                    color: #3D3A3B;
                    &:hover{
                        color: red;
                    }
                }
            }
        }
    }
}