#logo a {
    border: none !important;
    background: none !important;
}

.custom-icon > i {
    display: inline-block;
    color: #fff;
    background: #61666b;
    width: 2.5em;
    height: 2.5em;
    border-radius: 0.35em;
    text-align: center;
    line-height: 2.5em;
    margin-right: 0.75em;
}