body {
    font-family: 'Open Sans', sans-serif;
    /*font-family: 'PT Sans', sans-serif;*/
    font-size: 16px;
    padding: 5px 25px 30px 25px;
    color: #000000;
    letter-spacing: 0.05em;
    line-height: 150%;
}

.header {
    font-family: 'Open Sans', sans-serif;
    /*font-family: 'PT Sans', sans-serif;*/
    font-size: 16px;
    padding: 10px 0px 10px 0px;
    border-bottom: 1px solid black;
    letter-spacing: 0.04em;
}

a:hover {
    text-decoration: none;
    cursor: pointer;
    color: inherit;
}

.header_links {
    text-decoration: none;
    color: inherit;
}

.header_links:hover {
    text-decoration: none;
    cursor: pointer;
    color: inherit;
}

.hr_sidebar {
    border-bottom: 2px solid black;
}

.main_block {
    padding: 30px;
    margin-bottom: 20px;
}

@media (max-width: 767px) {
    body {
        padding: 5px 10px 30px 10px;
    }
    .main_block {
        padding: 10px 0;
    }
}

.post-title {
    font-size: 30px;
    /*font-family: 'Roboto', sans-serif;*/
    font-family: 'Open Sans', sans-serif;
    line-height: 150%;
    letter-spacing: 0.04em;
}

.tool-title {
    font-size: 20px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 20px;
}

input {
    margin-bottom: 15px;
}

textarea {
    margin-bottom: 15px;
}

.glyphicon {
    cursor: pointer;
}

pre {
    font-size:14px;
}

p {
    margin-bottom: 10px;
}

.mcq_q {
    padding:20px 10px;
    border:1px solid #aaaaaa;
    border-radius:2px;
    margin-bottom:20px;
}

.mcq_option {
    padding:10px;
    border:1px dashed #aaaaaa;
    border-radius:2px;
    margin-bottom:10px;
}

.mcq_option:hover {
    padding:10px;
    border:1px solid #aaaaaa;
    border-radius:2px;
    margin-bottom:10px;
}

.practice_menu {
    margin-bottom:15px;
    text-align:center;
    border:1px solid black;
    border-radius:2px;
    padding:20px;
    font-size:20px;
}

.practice_menu:hover {
    border:2px solid black;
}