.sec-01 img {
    width: 60%;
    margin: 30px auto;
}
@media screen and (max-width: 480px) {
    .sec-01 img {
        width: 100%;
        margin-bottom: 15px;
    }
}

.sec-01 .container-fluid img {
    width: 100%;
}

.flex1 {
    display: flex;
    justify-content: center;
    align-items: center;
}
.flex1 div {
    display: flex;
    justify-content: center;
    align-items: center;
}
.flex1 div img {
    width: 23px;
    margin: 0%;
    margin-right: 10px;
}