.section-1 {
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.2) url(lab.png);
    background-position: 0px 190px;
    background-blend-mode: darken;
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-size: 100vw 45vh;
    /* margin-top: auto; */
    height: 240px;
    width: 100vw;
}
.section-1 h1{
    color: white;
    /* font-family: 'Ubuntu', sans-serif; */
}

@media only screen and (max-width:1100px) {
    .section-1{
        background-size: 100vw 45vh;
        height: 220px;
    }
    
}
@media only screen and (max-width:800px) {
    .section-1{
        background-size: 100vw 40vh;
        height: 200px;
    }
    
}
@media only screen and (max-width:450px) {
    .section-1{
        background-size: 100vw 30vh;
        height: 150px;
    }
    
}