.guide-icon {
    display: inline-block;
    width: 200px;
    height: 200px;
    background-size: 100% 100%;
}

#guideIcon1 {
    background-image: url(../image/guide/1.预约挂号1.png);
}

#guideIcon1:hover {
    background-image: url(../image/guide/1.预约挂号2.png);
}

#guideIcon2 {
    background-image: url(../image/guide/2.科室介绍1.png);
}

#guideIcon2:hover {
    background-image: url(../image/guide/2.科室介绍2.png);
}

#guideIcon3 {
    background-image: url(../image/guide/3.专家介绍1.png);
}

#guideIcon3:hover {
    background-image: url(../image/guide/3.专家介绍2.png);
}

#guideIcon4 {
    background-image: url(../image/guide/4.出诊时间1.png);
}

#guideIcon4:hover {
    background-image: url(../image/guide/4.出诊时间2.png);
}

#guideIcon5 {
    background-image: url(../image/guide/5.服务指南1.png);
}

#guideIcon5:hover {
    background-image: url(../image/guide/5.服务指南2.png);
}