#gallery{
    height: auto;
    width: auto;
    position: relative;
    display: block;
    text-align: center;
}

@media screen and (min-width: 1000px){
    .facilityImg{
        position: relative;
        display: inline-block;
        width: calc(50% - 20px);
        height: auto;
        margin: 10px;
    }
}

@media screen and (max-width: 1000px){
    .facilityImg{
        position: relative;
        display: block;
        width: calc(100% - 20px);
        height: auto;
        margin: 10px;
    }
}