div.item {
    margin-bottom: 24px;
    border: solid 2px #f0f0f0;
    width:100%;
}


  div.item:hover {
        border-color: #880000;
 }

.layui-card {
    border-width: 0px;
    border-style: solid;
    border-radius: 0;
    width: 100%;
}

.layui-card-header {
    background-color: #fafafa;
    border-bottom: 0px solid rgb(24, 144, 255);
}


.layui-card-body {
    border-bottom: solid 1px #f5f5f5
}

.layui-card-foot {
    padding: 10px 15px;
    line-height: 24px;
}


.layui-card-body {
    font-family: Helvetica Neue;
    line-height: 33px;
    cursor: pointer;
}


.layui-card-body * {
    color: #494B4D;
}


  .layui-card-body .answer {
        font-size: 12px;
        background-color: #f5f5f5;
        padding: 10px;
        margin: 10px;
        border-radius: 5px;
    }

    .layui-card-body b {
        color: #1E9FFF
    }
 

mjx-container[jax="CHTML"][display="true"] {
    margin: 0px !important;
    display: inline-block !important;
}





.filter-label {
    padding-top: 20px;
    margin-right: 20px;
    color: #aaa
}

.typesname {
    font-size: 13px;
    color: #888
}

.opts1, .opts2, .opts4 {
    margin: 24px 10px;
}

.opt {
    margin: 10px;
}



.opts1 {
    display: flex;
    flex-direction: column
}

.opts2 .opt {
    display: inline-block;
    width: 40%;
}

.opts4 {
    display: flex;
    justify-content: space-between
}

@media screen and (max-width: 800px) {
    .opts1, .opts2, .opts4 {
        display: flex;
        flex-direction: column
    }

        .opts2 .opt {
            display: inline-block;
            width: 100%;
        }

    img {
        max-width: 98%;
    }
}