@import url('https://fonts.googleapis.com/css2?family=Roboto+Slab:wght@100;300;400;500;700;900&display=swap');

html, body {
    font-family: 'Roboto Slab', serif;
}

.cus-brand {
    text-transform: uppercase;
}
.navbar {
    background-color: #2BBBAD;
}

.wrapper-content {
    padding: 20px 0;

}
.title {
    text-decoration: none;
}
.title span {
    text-transform: none;
}

.wrapper-content-cover {
    position: relative;
    height: 450px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.15);
    background: #000;
    border-radius: 5px;
    margin-bottom: 20px;
}

.wrapper-content-cover::before {
    content: ' ';
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.5;
    background:  url(../images/cover-cau-doi-toan-thu.jpg) center no-repeat;
}

.wrapper-content-cover a {
    position: absolute;
    width: 100px;
    height: 71px;
    background: url(../images/icon-youtube.png) no-repeat;
    z-index: 2;
    left: 0;
    right: 0;
    margin: 0 auto;
    top: 40%;
    text-indent: -9999px;
}

.wrapper-content-cover a:hover {
    filter: brightness(1.2);
}

.quote {
    padding: 20px;
    position: relative;
    border-radius: 5px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.15);
}

.btn-reading {
    position: relative;
    height: 50px;
    transition: 0.5s;
    background-image: linear-gradient(to right, #a1c4fd 0%, #c2e9fb 51%, #a1c4fd 100%);
    background-size: 200% auto;
    box-shadow: 0 0 20px #eee;
    border-radius: 10px;
    line-height: 33px;
    color: #251c1c;
    font-size: 18px;
}

.btn-reading::before {
    content: "";
    display: block;
    position: absolute;
    top: 7px;
    left: 33px;
    width: 35px;
    height: 100%;
    background: url(../images/icon-book.png) top right no-repeat;
}

.btn-reading:hover {
    background-position: right center !important; /* change the direction of the change here */
}
.btn-reading > span {
    margin-left: 20px;
}
.wrapper-content-detail {
    padding: 5px 5px 15px 5px;
    border-bottom: 1px solid #eee;
    margin-bottom: 25px;
}

.wrapper-content-detail:last-child {
    border-bottom: none;
}

.page-title {
    margin-top: 20px;
}

.single-post {
    margin-bottom: 30px;
}

.post-meta a {
    color: #000;
}

.post-author {
    margin-right: 10px;
}
.post-date {
    margin-right: 10px;
}

.single-post p img {
    width: 100%;
    box-shadow: 0 0 10px;
}

.post-tags a {
    background-color: #cecece;
    padding: 4px;
    border-radius: 4px;
    box-shadow: 0 0 1px;
    color: #4f4e4e;
}

.post-tags a:hover {
    background-color: #e5e5e5;
}

.entry-content {
    margin-bottom: 15px;
}

.entry-content-tap-tho {
    display: flex;
}

.entry-item {
    min-width: 400px;
    background: #f1f1f1;
    padding: 20px;
    margin: 20px;
}

.track-list li a {
    color: #333333;
}

.track-title {
    font-weight: bold;
    text-decoration: underline;
    font-size: 18px;
    cursor: pointer;
}

.wp-block-image > img {
    width: 55%;
}

.tags-area {
    margin-bottom: 15px;
}

.breadcrumb-item a {
    text-decoration: none;
}

.post-title-area {
    margin-bottom: 15px;
}

.toc-title {
    font-weight: bold;
    font-size: 19px;
    cursor: pointer;
    text-decoration: underline;
}
.track-list-image {
    display: block;
    text-align: center;
}

.drop-menu-link a {
    color: #fff;
    margin: ;
}
.drop-menu-link a:focus {
    border: none;
}

.navbar-expand-lg .navbar-nav .dropdown-menu {
    background: #000;
}
.nav-item a {
    color: #fff;
}

.btn-scroll {
    display: none;
    cursor: pointer;
    position: fixed;
    bottom: 20px;
    right: 30px;
    z-index: 99;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: rgb(51 56 61);
    color: white;
    border: none;
}

.post-title.title-large a {
    text-decoration: none;
}

.post-content {
    line-height: 25px;
    margin-top: 6px;
}

.post-cat {
    color: #000;
}

.category-listing .post-meta {
    font-style: italic;
    font-size: 13px;
}

/* portrait tablets, portrait iPad, landscape e-readers, landscape 800x480 or 854x480 phones */
@media (max-width:1200px)  {
    .entry-content-tap-tho {
        flex-direction: column;
    }
}
@media (max-width:641px)  {
    .title h2 {
        font-size: 20px;
    }

    .entry-item {
        min-width: auto;
    }

    .wp-block-image > img {
        width: 100%;
    }
    .btn-scroll {
        font-size: 12px;
    }
}