.form-group div {
    margin-left: 0px;
}

.hook_play_pause {
    font-size: 2.5em;
    color: #6c757d;
}

.hook_play_pause:hover {
    text-decoration: none;
}

.hook-options label {
    font-size: larger;
}

.header-logo {
    max-width: 40%;
    height: auto;
    max-height: 15rem;
}