.gallery {
    background-color: Cyan;
    padding: 30px;
    width: 700px;,
    margin: 0 auto;
    margin-top: 30px;
    text-align:center;
}
.gallery img {
  
    border-width: 5px;
    border-color: #FFFFFF;
    border-style: solid;
    box-shadow: 3px 3px 5px 6px #000000;
    margin: 5px;
}

    .main-menu a {
    background-color: cyan;
    border-color: cyan;
    font-weight: bold;
    display: inline-block;
    padding: 5px 10px;
}
.main-menu a:hover {
    background-color: ;
    color: White;
}
    .main-menu {
    background: Cyan;
}