.video-container {
    padding-top: 40px;
}

    .video-container iframe {
        width: 50vw;
        height: calc(50vw/1.77);
    }

@media screen and (max-width: 820px) {
    .video-container iframe {
        width: 95vw;
        height: calc(95vw/1.77);
        padding: 5px;
    }
}

@media screen and (max-width: 767px) {
    .video-container iframe {
        width: 100vw;
        height: calc(100vw/1.77);
        padding:5px;
    }
}



.step-container {
    display: flex;
    margin: auto;
    width: 960px;
    margin-top: 5%;
    flex-wrap: wrap; /*使他可以折行*/    
}


.step-div {
    width: calc(900px/3);
    height: calc(900px/3);
    line-height: 280px;
    margin: 10px;   
}


@media screen and (max-width: 820px) {
    .step-div {
        width: calc(90vh/3);
        height: calc(90vh/3);
        margin-left: 25px;
    }
}

@media screen and (max-width: 767px) {
    .step-div {
        width: 100%;
        height: 100%;
        margin-left: 6%;
        
    }
}



.step-div-one {
    line-height: 280px;
    margin: 10px;
}

.step-img {
    width: 300px;
    height: 200px;
    border: 1px solid #22B573;
    background-color: #ffffff;
    position: relative;
}

@media screen and (max-width: 820px) {
    .step-img {
        margin-left: 20px;
    }
}

@media screen and (max-width: 767px) {
    .step-img {
        margin-left: 6vw;
    }
}

.step-img-one {
    border: 1px solid #22B573;
    background-color: #ffffff;
    position: relative;
}

.tab {
    color: white;
    background-color: #22b573;
    padding: 3px 14px;
    position: absolute;
    bottom: 5px;
    left: -12px;
    line-height: initial;
}

    .step-img img {
        max-width: 100%;
        max-height: 100%;     
    }

.step-content{
    color:white;
    padding:15px 10px;
}
    .step-content h5{
        line-height:1.5;
    }

@media screen and (max-width: 820px) {
    .step-content h5 {
        font-size: 22px;
    }
}


@media screen and (max-width: 767px) {

    .step-content {
        margin-left: 10px;
    }

    .step-content h5 {
        font-size: 16px;
    }
}

    #p_25_1 {
        left: 38%;
        position: absolute;
    }

#p_26_1, #p_26_2 {
    left: 25%;
    top: 30%;
    position: absolute;
}