.offerBtn {
    transition: all .3s;
}

.offerBtn:hover {
    opacity: 0.9;
    transform: translateY(5%);
}

.offer01 {
    width: 92.4%;
    bottom: 9.4%;
    left: 4%;
}

.offer02 {
    width: 43.1%;
    bottom: 22.5%;
    left: 4%;
    -webkit-mask: url("../images/thing_40_btn.png") no-repeat center center;
    mask: url("../images/thing_40_btn.png") no-repeat center center;
    -webkit-mask-size: contain;
    mask-size: contain;
}

.offer03 {
    width: 43.1%;
    bottom: 22.5%;
    right: 4%;
     -webkit-mask: url("../images/thing_40_btn.png") no-repeat center center;
    mask: url("../images/thing_40_btn.png") no-repeat center center;
    -webkit-mask-size: contain;
    mask-size: contain;
}

.offer04 {
    width: 43.1%;
    bottom: 21.9%;
    left: 4%;
     -webkit-mask: url("../images/thing_45_btn.png") no-repeat center center;
    mask: url("../images/thing_45_btn.png") no-repeat center center;
    -webkit-mask-size: contain;
    mask-size: contain;
}

.offer05 {
    width: 43.1%;
    bottom: 21.9%;
    right: 4%;
     -webkit-mask: url("../images/thing_46_btn.png") no-repeat center center;
    mask: url("../images/thing_46_btn.png") no-repeat center center;
    -webkit-mask-size: contain;
    mask-size: contain;
}