.bg-trichet{
    background-image: url(../images/bg-trichet.jpg);
}

.bg-trichet .btn{
    margin-bottom: 230px;
}

p{
    text-align: center;
    font-size: 16px;
    width: 870px;
    margin: 0 auto;
}
h3{
    text-align: center;
    font-size: 16px;
    color: #303030;
    font-weight: 900;
}

.row-images{
    margin-top: 80px;
}
.image{
    padding: 20px;
}