.left_box {
    width: 14.9%;
    float: left;
    text-align: left;
    margin: 0;
    border-right: 1px solid black;
    height: 88vh;
    overflow: scroll;
    scrollbar-width: none;
}

.left_box::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.posts-content  {
    width: 85%;
    float: left;
    text-align: left;
    margin: 0;
    height: 88vh;
    overflow: scroll;
    scrollbar-width: none;
}

.posts-content::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.options_title {
    display: block;
    font-weight: bold;
    font-size: 14px;
    padding-top: 20px;
    margin-left: 20px;
    margin-right: 20px;
    color: var(--main-color);
}

.left_box  a {
    display: block;
    padding: 10px 30px 10px 30px;
    font-weight: bold;
    text-decoration: none;
    color: black;
    font-size: 13px;
    cursor: pointer;
}

.left_box .left_title {
    width: 100%;
    text-align: center;
    color: var(--main-color);
    font-size: 20px;
    display: block;
    font-weight: bold;
    margin-top: 20px;
}

.left_box  a:hover {
    background-color: #e3e3e3;
}

.posts-content .post {
    margin: 0 15% 0 15%;

    line-height: 2 !important;
    font-size: 17px;
}

.posts-content p {
    margin-top: 30px;
    margin-bottom: 30px;
}

.literature_list{

    list-style-type: none;
}

.images {
    display: block;
    text-align: center;
}

.literature_list > li {
    margin-top: 30px;
}

.literature_list  .authors {
    margin-top: 30px;
    margin-bottom: -20px;
    text-align: left;
    font-style: italic;
    font-size: 16px;
}

.literature_list .book_title {
    font-weight: bold;
}

.footer {
    display: none;
}

text {
    padding: 0 10%;
    display: block;
}

text > .ok, text > .maybe, text > .not_ok {
    margin: 20px;
    display: block;
    box-sizing: content-box;
}

text > .ok::before {
    content: '✅';
    width: 40px;
    height: 40px;
    margin: 10px auto;
}

text > .maybe::before {
    content: '✴️';
    width: 40px;
    height: 40px;
    margin: 10px auto;
}

text > .not_ok::before {
    content: '❌';
    width: 40px;
    height: 40px;
    margin: 10px auto;
}

.curriculum_title {
    font-size: 20px;
    font-weight: bold;
    margin: 20px;
    color: var(--main-color);
}

.faq > li {
    margin: 20px 0;
}



@media screen and (max-width: 768px) {
    .left_box {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid black;
        height: auto;
    }

    .posts-content  {
        width: 100%;
        height: auto;
    }

    .left_box  a {
        font-size: 15px;
    }

    .posts-content .post {
        margin: 10px 10% 10px 10%;
        padding: 0;
    }

    text {
        padding: 0;
    }
}