style.css

* {
    box-sizing: border-box;
}

#left {
    flex-basis: 200px;
    background-image: url("images/aside.jpg");
    background-repeat: no-repeat;
    background-position: bottom;
    padding: 25px;
}

#left,
#left a {
    color: #6b1427;
}

#right {
    flex-grow: 1;
    background-color: bisque;
    display: flex;
    flex-direction: column;
}

#top {
    text-align: left;
    padding-right: 165px;
    color: #832a3a;
    border-bottom: 2px solid #832a3a;
}

html,
body {
    height: 100%;
}

body {
    padding: 0;
    margin: 0;
    display: flex;
}

header {
    background-color: floralwhite;
}

main {
    background-color: antiquewhite;
    flex-grow: 1;
    padding-left: 20px;
    text-decoration-color: #832a3a;
}

div.gallery {
    margin: 5px;
    border: 1px solid #832a3a;
    float: left;
    width: 180px;
}

div.gallery:hover {
    border: 5px solid #e4e9ed;
}

div.gallery img {
    width: 100%;
    height: auto;
    margin: auto;
}

div.desc {
    padding: 15px;
    text-align: center;
    background-color: whitesmoke;
    border: 1px inset #832a3a;
}

footer {
    background-color: #c7998b;
    flex-basis: 40px;
    text-align: center;
    border: 1px double #832a3a;
    padding: 10px;
}

#gallery {
    background-color: #d7d7f7;
    border-top-color: beige;
}

#contacts {
    text-align: right;
    padding-right: 85px;
    float: right;
}