.sub h3{
    font-size: 20px;
    color: #333;
    letter-spacing: -0.7px;
    margin-bottom: 15px;
}
.sub h3:before {
    content: '';
    display: inline-block;
    vertical-align: middle;
    width: 20px;
    height: 20px;
    border: 6px solid #3e6393;
    border-radius: 50%;
    margin-top: -4px;
    margin-right:5px;
}
.sub img {
    width:100%;
}
.sub > div {
margin-bottom:50px;
}

/* tablet */
@media screen and (min-width:769px) and (max-width:991px){
}

/* mobile */
@media screen and (max-width:768px){
}