ul.custom-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

    ul.custom-list li {
        position: relative;
        padding-left: 15px;
    }

        ul.custom-list li::before {
            content: "•";
            position: absolute;
            left: 0;
            top: 0;
            color: black;
        }