.desc_lang {
    background-color: lightgray;
    padding: 10px 10px;
    border-radius: 3px;
    margin-top: 10px;
    margin-bottom: 10px;
}
.desc_lang h6 {
    font-weight: 400;
    font-size: 1.1em;
    border-bottom: 1px solid #222;
    cursor:pointer;
}
.desc_lang code {
    color: inherit;
}
.desc_lang pre {
    line-height: 1.1;
    background-color: #222;
    padding: 10px;
    border-radius: 2px;
    color: #d8d8d8;
    margin-top: 10px;
    margin-bottom: 10px;
}
.row.main h1 {
    text-align:center;
}
#proglab {
    width: 100%;
    height: 680px;
    overflow: hidden;
    border: 1px solid #848484;
    border-radius: 2px;
    margin: 10px 0;
}
.togglesum {
    background-color: #45ada8;
    padding : 0px 15px;
    border-radius: 2px;
    cursor: pointer;
    -webkit-transition: background-color 0.3s ease 0s !important;
    transition: background-color 0.3s ease 0s !important;
    margin-left: 5px;
}
.togglesum:hover {
    background-color: #547980;
}
h2 {
    margin-top: 20px;
    margin-left: 10px;
    color: #594F4F;
    font-size: 2rem;
}
.summary {
    margin-left: 20px;
    display:none;
}
.summary ol a {
    color : #45ada8;
/*    text-decoration: underline;*/
}