.banner {
    position: relative;
    height: 30vh;
    width: 100%;
    overflow: hidden;
    background: -webkit-linear-gradient(240deg, #435462, #3c495b, #1d2733); /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(240deg,  #435462, #3c495b, #1d2733); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}
.banner .title{
    position: absolute;
    top: 50%;
    width: 100%;
    color: #fff;
    font-size: clamp(1rem, 2vw,1.8rem);
}
.banner .title>div{
    display: inline-block;
    padding: 15px 30px;
    border-radius: 0.5rem;
    background-color: rgba(0, 0, 0, 0.22);
}
.banner .title>div >span{
    display: block;
    font-size: clamp(0.8rem, 2vw,1.3rem);
}
#item2 {
    width: 20%;
    position: absolute;
    left: 50px;
    top: 0;
}
#item3 {
    width:40%;
    position: absolute;
    right: 70px;
    top: 70px;
}
@media (max-width: 1250px) {
    #item3 {
        width: 50%;
        position: absolute;
        right: -50px;
        top:-150px;
    }

}
@media (max-width: 900px) {
    #item3 {
        width: 60%;
        position: absolute;
        right: -50px;
        top:-100px;
    }

}
@media (max-width: 750px) {
    #item3 {
        width: 100%;
        position: absolute;
        right: -50px;
        top:-100px;
    }

}