body {
    font-family: 'Roboto', sans-serif;
}
html, body {
    padding: 10px 0 0;
    margin: 0 0 50px;
}
p{
    text-indent: 30px;
    font-size: 20px;
}
ul, li, label{
    font-size: 18px;
}

body{
    background-color: #cccccc;
    color: #121212;
}
.article img {
    display: block;
    margin-left: auto;
    margin-right: auto;
    max-width: 400px;
    height: auto;
    padding-top: 40px;
}
#button{
    float: right;
    text-align: center;
    padding: 14px 16px;
    color: white;
}
/*dark mode*/
.dark{
    background-color:#181818;
    color: #B3B3B3;
}
.dark .dropdown-content {
    background-color: #b3b3b3;
}

.dark .article{
    background-color: #282828;
}
.dark .submit{
    background-color: #b3b3b3;
}
.dark span{
    color: #cf6679;
}

/* Top menu*/
nav{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
}
nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333333;
}

nav li {
    display:inline;
}

li a, .dropbtn {
    display: inline-block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

li a:hover, .dropdown:hover .dropbtn, .button:hover {
    background-color: rgb(255,0,0);
}

li.dropdown {
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    overflow: hidden;
    z-index: 1;
}

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

.dropdown-content a:hover {
    background-color: #f1f1f1;
}

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

/* Cat profile section*/
h1{
    font-size: 40px;
}
h1, h2 {
    padding-top: 10px;
    text-align: center;
    text-transform: uppercase;
}

/* Article section*/
.article{
    width:64%;
    margin-left: 18%;
    margin-right: auto;
    display: inline-block;
    background-color: #dddddd;
    padding-bottom: 30px;
    padding-left: 30px;
    padding-right: 30px;
}

hr{
    width: 75%;
}

.grid-container{
    display: grid;
    grid-template-columns: auto auto;
    padding: 10px;
}
.grid-item {
    padding: 20px;
}
.grid-item2 {
    grid-column: 1 / span 2;
}

.hidden_text {
    display: none;
}
.read_more{
    color: steelblue;
}
.read_more:hover{
    text-decoration: underline;
}

/* registration section*/

span {
    color: red;
    font-size: 17px;
}
form{
    padding-top: 30px;
    margin-left: 40%;
}
.submit{
    margin-top: 15px;
    margin-left: 80px;
    font-size: 15px;
}

/*print version*/
@media print {
    nav, button, form, .read_more, .registration {
        display: none;
    }
    .hidden_text{
        display: block;
    }
    .article{
        width: 100%;
        margin-left: 0;
        padding-left: 0;
    }
}
@media only screen and (max-width: 1500px) {
    .grid-item{
        grid-column: 1 / span 2;
    }
}
@media only screen and (max-width: 800px) {
    .article{
        width: 100%;
        margin-left: 0;
        padding-left: 0;
    }
}