.c-ttl04 {
    font-size: 12px;
    position: relative;
    font-weight: bold;
    padding-left: 20px;
}

.c-ttl04:before {
    position: absolute;
    top: 9px;
    left: 0;
    content: "";
    background: #121a58;
    border-radius: 2px;
    width: 10px;
    height: 2px;
}

@media only screen and (min-width: 769px)  {

    .c-ttl04 {
        font-size: 14px;
    }

    .c-ttl04::before {
        top: 10px;
    }

  }