:root {
    --color-content: #f6f6f6;
    --color-border:  #efefef;
    --color-btn: #a5a5a5;
    --color-btn-hover: #313131;
    --color-font: #6b6b6b;
    --color-h2: #313131;
    --color-h3: #606060;
    --colot-footer: #41bd8b;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    color: var(--color-font);
    margin: 0;
}

.cenva h1 {
    color: white;
    font-size: 50px;
}

h2 {
    margin-bottom: 0px;
    color: var(--color-h2);
}

h3 {
    color: var(--color-h3);
}

.content {
    max-width: 100%;
    display: flex;
    justify-content: center;
}

main, .cenva {
    margin-top: 30px;
    width: 1000px;
    display: flex;
    flex-flow: column;
}

main {
    margin-bottom: 50px;
}

p {
    line-height: 25px;
}

code .comment {
    color: #b1b1b1;
}

a {
    color: var(--color-btn);
    transition: 0.5s;
}

a:hover {
    color: var(--color-btn-hover);
}

.show-content {
    width: 400px;
    height: auto;
    max-width: 500px;
    display: flex;
    flex-flow: column;
    border-radius: 20px;
    border: 1px solid var(--color-border);
    background-color: var(--color-content);
}

.show-content p {
    padding: 20px;
    padding-bottom: 0;
}

.show-content img {
    width: 100%;
    height: 200px;
    border-radius: 20px 20px 0px 0px;
    object-fit: fill;
}

.btn:hover {
 background-color: var(--color-btn-hover);
 color: white;
}

main p, li {
    color: var(--color-font);
    line-height: 25px;
}

strong {
    color: black;
}

.btn {
    transition: 0.5s;
    padding-left: 10px;
    padding-right: 10px;
    color: white;
    border-radius: 13px;
    margin-top: 10px;
    text-decoration: none;
    width: 50%;
    margin: 10px;
    text-align: center;
    background-color: var(--color-btn);
    padding: 10px;
}

table, th, td {
    border: 1px solid #afafaf;
    padding: 10px;
}

table {
    border-collapse: collapse;
}

a img {
    transition: 0.2s;
}

a img:hover {
    filter: contrast(100%) brightness(90%);
}

header {
    padding: 50px; 
    background: -webkit-linear-gradient(230deg, #41bf8c 40%, #33795c 80%);
}

.w {
    color: white;    
}

.b {
    color: black;
}

footer {
    margin-top: 50px;
    padding-top: 20px;
    padding-bottom: 40px;
    background-color: var(--colot-footer);
}

footer a {
    color: white;
    text-decoration: none;
}

footer a:hover {
    color: #e1e1e1;
    text-decoration: none;
}