html,body {
    /* height: 100%; */
    touch-action: none;
    touch-action: pan-y;
}
body {
    margin: 0;
    padding: 0;
}
h3 {
    font-size: 22px;
}
.container {
    height: 100%;
    position: relative;
    overflow-y: auto;
    padding: 1.4rem;
}
.weight {
    font-weight: 600;
}
.fontSize14 {
    font-size: 14px;
}
.title {
    font-size: 20px;
    font-weight: 600;
    margin-top: 46px;
    margin-bottom: 35px;
}
.paragraph {
    width: 90%;
    margin: 0 auto;
}
.paragraph > p {
    font-size:16px ;
    line-height: 30px;
    /* margin-bottom: 30px ; */
}
/* 最后一个 */
.paragraph:last-child {
    margin-bottom: 100px;
}

/* 缩进 */
.indentation {
    text-indent: 2em;
    font-size: 16px;
    line-height: 30px;
}
#scroll-to-top {
    width: 40px;
    height: 40px;
    font-size: 20px;
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    cursor: pointer;
    /* padding: 10px; */
    background-color: #333;
    color: #fff;
    border-radius: 50%;
    opacity: 0.5;
    transition: opacity 0.3s ease;
    border: none;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -webkit-tap-highlight-color: transparent;
}

#scroll-to-top:hover {
    opacity: 1 !important;
}

/* 屏幕大于760px的时候，媒体查询 */
@media screen and (min-width:760px) {
    .container {
        width: 80%;
        margin: 0 auto;
        height: 100%;
        position: relative;
        overflow-y: auto;
        padding: 1.4rem;
    }
}
/* 屏幕大于1000px的时候，媒体查询 */
@media screen and (min-width:1000px) {
    .container {
        width: 60%;
        margin: 0 auto;
        height: 100%;
        position: relative;
        overflow-y: auto;
        padding: 1.4rem;
    }
}