html {
    position: relative;
    min-height: 100%;
}

body {
    background-color: #e7e8e9;
    margin-bottom: 40px;
    background-image: url('/img/background.png');
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: contain;
    background-position-y: bottom;
    background-position-x: right;
    width: 100%;
}

nav {
    background-color: rgba(52,58,64, 0.80);
}

.main-panel {
    margin-top: 56px;
    margin-bottom: 46px;
    padding-top: 10px;
}

.op-0 {
    opacity: 1;
}

.op-1 {
    opacity: 0.9;
}

.op-2 {
    opacity: 0.8;
}

.op-3 {
    opacity: 0.7;
}

.op-4 {
    opacity: 0.6;
}

.op-5 {
    opacity: 0.5;
}

.big-checkbox {
    width: 16px;
    height: 16px;
}

.no-decoration a:hover {
    text-decoration: none;
}

.w-200 {
    width: 200px;
}

.w-160 {
    width: 160px;
}

.w-360 {
    width: 360px;
}