.dynamic-image-18,.dynamic-image-19,.dynamic-image-20  {
    background-size: cover;
}

.dynamic-image-18 {
    background: url(../images/inimage/top-banner/1.jpg) top center no-repeat;
}

.dynamic-image-19 {
    background: url(../images/inimage/top-banner/2.jpg) top center no-repeat;
}

.dynamic-image-20 {
    background: url(../images/inimage/top-banner/3.jpg) top center no-repeat;
}