body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
}

html {
    box-sizing: border-box;
}

*,
*:before,
*:after {
    box-sizing: inherit;
}

.column {
    float: left;
    width: 33.3%;
    margin-bottom: 16px;
    padding: 0 8px;
}

.card {
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2);
    margin: 8px;
}

.about-section {
    padding: 50px;
    text-align: center;
    background-color: #474e5d;
    color: white;
}

.container {
    padding: 0 16px;
}

.container::after,
.row::after {
    content: "";
    clear: both;
    display: table;
}

.title {
    color: grey;
}

.button {
    border: none;
    outline: 0;
    display: inline-block;
    padding: 8px;
    color: white;
    background-color: #000;
    text-align: center;
    cursor: pointer;
    width: 100%;
}

.button:hover {
    background-color: #555;
}

.footer {
    width: 100%;
    height: 44px;
    left: 0;
    bottom: 0;
    background-color: #E9E9E9;
    font-size: 12px;
    color: black;
    text-align: center;
    line-height: 44px;
}

@media screen and (max-width: 650px) {
    .column {
        width: 100%;
        display: block;
    }
}

.topnav {
    overflow: hidden;
    background-color: #e9e9e9;
}

.topnav a {
    float: left;
    display: block;
    color: black;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    font-size: 17px;
}

.topnav a:hover {
    background-color: #ddd;
    color: black;
}

.topnav a.active {
    background-color: #2196F3;
    color: white;
}

.topnav .time {
    float: right;
    padding: 13px 16px;
}

.topnav input[type=text] {
    padding: 6px;
    margin-top: 8px;
    font-size: 17px;
    border: none;
}

.topnav .search-container button {
    float: right;
    padding: 6px 10px;
    margin-top: 8px;
    margin-right: 16px;
    background: #ddd;
    font-size: 17px;
    border: none;
    cursor: pointer;
}

.topnav .search-container button:hover {
    background: #ccc;
}

@media screen and (max-width: 600px) {
    .topnav .search-container {
        float: none;
    }
    .topnav a,
    .topnav input[type=text],
    .topnav .search-container button {
        float: none;
        display: block;
        text-align: left;
        width: 100%;
        margin: 0;
        padding: 14px;
    }
    .topnav input[type=text] {
        border: 1px solid #ccc;
    }
}

.dropdown {
    float: left;
    overflow: hidden;
}

.dropdown .dropbtn {
    font-size: 16px;
    border: none;
    outline: none;
    color: black;
    padding: 14px 16px;
    background-color: inherit;
    font-family: inherit;
    margin: 0;
}

.navbar a:hover,
.dropdown:hover .dropbtn {
    background-color: #ddd;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
    z-index: 1;
}

.dropdown-content a {
    float: none;
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    text-align: left;
}

.dropdown-content a:hover {
    background-color: #ddd;
}

.dropdown:hover .dropdown-content {
    display: block;
}