body {
    background-color: #fff;
}

.obs-banner {
    height: 740px;
    background-position: center;
    background-repeat: no-repeat;
    background-size: auto 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.obs-banner-text {
    color: #fff;
    line-height: 40px;
    font-size: 40px;
    text-align: center;
}

    .obs-banner-text p {
        font-size: 40px;
        padding-bottom: 23px;
        color: #fff;
    }

.obs-tab {
    padding-top: 130px;
}

    .obs-tab ul {
        border-top: 1px solid #c9c9c9;
        border-bottom: 1px solid #c9c9c9;
        overflow: auto;
        white-space: nowrap;
    }

    .obs-tab li {
        cursor: pointer;
        font-size: 30px;
        color: #888888;
        padding: 30px 72px 30px 0;
        display: inline-block;
    }

        .obs-tab li:hover, .obs-tab li.cur {
            color: #000;
        }

.obs-list {
    font-size: 30px;
}

    .obs-list ul {
        display: none;
    }

        .obs-list ul.block {
            display: block;
        }

    .obs-list li {
        padding: 60px 0;
        border-bottom: 1px solid #c9c9c9;
    }

        .obs-list li:last-child {
            border-bottom: 0;
        }

    .obs-list h5 {
        font-size: 30px;
        padding-bottom: 17px;
    }

    .obs-list p {
        font-size: 20px;
        color: rgb(128, 128, 128);
        line-height: 30px;
    }

.obs-list-img {
    padding-right: 370px;
}

.obs-tab li:last-child {
    padding-right: 0;
}

.obs-list-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

@media only screen and (max-width:1000px) {
    .obs-list-img {
        padding-right: 100px;
    }
}

@media only screen and (max-width:800px) {
    .obs-tab li {
        font-size: 16px;
        padding: 15px 30px 15px 0;
    }

    .obs-list h5 {
        font-size: 16px;
    }

    .obs-list p {
        font-size: 16px;
    }

    .obs-list-img img {
        width: 72px;
    }

    .obs-list li {
        padding: 40px 0;
    }

    .obs-tab {
        padding-top: 62px;
    }

    .obs-banner {
        height: 354px;
    }
}

@media only screen and (max-width:640px) {
    .obs-banner-text {
        font-size: 14px;
        line-height: 14px;
        color: #fff;
    }

        .obs-banner-text p {
            color: #fff;
            font-size: 14px;
            padding-bottom: 8px;
        }

    .obs-tab li {
        font-size: 12px;
        padding: 15px 30px 15px 0;
    }

    .obs-list h5 {
        font-size: 12px;
    }

    .obs-list p {
        font-size: 10px;
    }

    .obs-banner {
        height: 176px;
    }

    .obs-tab {
        padding-top: 30px;
    }

        .obs-tab li {
            padding-right: 5px;
        }

    .obs-list-img {
        padding-right: 10px;
    }

    .obs-list h5 {
        padding-bottom: 5px;
    }

    .obs-list p {
        line-height: 15px;
    }

    .obs-list li {
        padding: 20px 0;
    }

    .obs-list-img img {
        width: 52px;
    }
}