html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background-color: rgb(240, 240, 240);
}


.hide {
    display: none;
}

.abs_center {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    margin: auto;
}

a:link, a:visited,
a:hover, a:active {
    color: rgb(90, 90, 90);
    text-decoration: none;
    font-size: 13px;
}

.RH-bk-green{
    background-color:rgb(100,228,186);
}

.RH-bk-blue{
    background-color:rgb(79,178,241);
}