.mainmenu {
    padding: 10px;
    background-color: lightgreen;
    position:absolute;
    top: 10px;
    left: 10px;
    width: 50%;
    height: 25%;
    border: 4px solid rgb(155, 255, 155);
    border-right: 4px solid rgb(92, 152, 92);
    border-bottom: 4px solid rgb(92, 152, 92);
}
.submainmenu {
    text-align: right;
    padding: 10px;
    background-color: lightgreen;
    position:absolute;
    top: -4px;
    left: 110%;
    width: 25%;
    height: 100%;
    border: 4px solid rgb(155, 255, 155);
    border-right: 4px solid rgb(92, 152, 92);
    border-bottom: 4px solid rgb(92, 152, 92);
    background-image: url('sandwich.jpg');
    background-size: cover;
}
.chat {
    position: absolute;
    top: 300px;
    left: 10px;
    border: 4px solid rgb(155, 255, 155);
    border-right: 4px solid rgb(92, 152, 92);
    border-bottom: 4px solid rgb(92, 152, 92);
    background-color: lightgreen;
}
h1 {
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
    color: chocolate;
}
body {
    background-color: aquamarine;
    background-image: url("ben-nevis.jpg");
    background-size: cover;
    background-repeat: no-repeat;
}