body {
    margin: 0;
    width: 100vw;
    height: 100vh;
}

.banner-box {
    width: 100%;
    height: 23%;
    background: #FFCB01;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
}

.category-box {
    position: fixed;
    top: 23%;
    left: 3%;
    width: 94%;
    height: 7%;
    display: flex;
    background-color: #FFFFFF;
    z-index: 1000;
}

.category-item-a {
    position: relative;
    text-decoration: none;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 25%;
    height: 100%;
    font-size: 1rem;
    font-family: Source Han Sans CN;
    font-weight: 500;
    color: #787878;

}

.category-item-a.checked {
    font-weight: bold;
    color: #2E2E2E;
}

.line {
    position: absolute;
    top: 75%;
    width: 25%;
    height: 4.3%;
    background: #FF0000;
    border-radius: 3px;
}

#list {
    width: 94%;
    height: auto;
    margin: 66% auto;
}

.item {
    width: 100%;
    height: 33vh;
    background: #F1F1F1;
    border-radius: 0.6rem;
    margin-top: 4%;
}

.video-img-box {
    position: relative;
    width: 100%;
    height: 79%;
    /*background: #FFCB00;*/
    border-radius: 0.6rem;
}

.play-button {
        display: block;
    position: absolute;
    width: 20%;
    height: 25%;
    top: 38%;
    left: 42%;
}

.video-title-box {
    width: 100%;
    height: 21%;
    display: flex;
    align-items: center;
    font-size: 1rem;
    font-family: Source Han Sans CN;
    font-weight: 500;
    color: #232323;

}

.item:nth-child(1) {
    margin-top: 0;
}

.liubai-box {
    width: 100%;
    height: 12%;
}

.loading {
    line-height: 40px;
    border-top: #e5e5e5 solid 1px;
    text-align: center;
    font-size: 12px;
    color: #999;
}

.tab-bar-box {
    position: fixed;
    bottom: 0;
    width: 100%;
    height: 7.5%;
    background-color: #FFFFFF;
    display: flex;
    justify-content: space-around;
    align-items: center;
    border: 1px solid #E5E5E5;
}

.tab-bar-item {
    width: 13%;
    height: 73%;
}

.tab-bar-a {
    display: block;
    width: 100%;
    height: 100%;
    text-decoration: none;
}

.tab-bar-icon-box {
    width: 55%;
    height: 60%;
    margin: 0 auto;
}

.tab-bar-title {
    width: 100%;
    height: 30%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.7rem;
    font-family: Source Han Sans CN;
    font-weight: bold;
    color: #9A9A9A;
    margin-top: 7%;
}

.tab-bar-title.selected {
    color: #FFCB01;
}