body, p {
    margin: 0;
    padding: 0;
}

body {
    padding: 100px;
    background: #717171;
}

#content {
    margin: 100px auto 20px auto;
    border: 10px solid #4C4C4C;
    width: 400px;
    height: 266px;
    position: relative;
    overflow: hidden;
}

#content img {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.fadeinimg {
    opacity: 1;
}

p {
    text-align: center;
}

#links {
    width: 420px;
    display: flex;
    margin: auto;
}

#links a {
    display: block;
    flex: 1;
    background: #6C0204;
    height: 50px;
    line-height: 50px;
    color: #D5D5D5;
    text-decoration: none;
    font-family: Arial, sans-serif;
    text-transform: uppercase;
    text-align: center;
}

#links a:hover {
    background: #A51D1F;
    color: #fff;
}