html,body {height: 100%}

.demo-box {
    border: 2px solid #D5D9D9;
    height: 150px;
    margin-top: 10px;
    padding: 20px 10px;
    text-align: center;
}

.demo-box h3 {
    text-align: center;
    color: #7f8c8d;
    font-size: 20px;
    position: absolute;
    left: 0;
    right: 0;
    margin: 0;
    top: -2px;
}

.demo-box h3 span {
    background-color: #ECF0F1;
    padding: 0 20px;
}

.example {
    font-size: 14px;
    background-color: #ecf0f1;
    padding: 10px;
    margin: 0 0 30px;
    border-bottom: 2px solid rgba(0, 0, 0, 0.1);
}

.example h2 {
    background-color: #7f8c8d;
    color: #ECF0F1;
    margin: -10px -10px 20px;
    padding: 10px;
    text-align: center;
    font-size: 24px;
}

button {
    border: none;
    border-radius: 3px;
    border-bottom: 2px solid rgba(0, 0, 0, 0.4);
    background-color: #3498DB;
    margin: 10px 0;
    padding: 5px 10px;
    display: inline-block;
    color: white;
    letter-spacing: 1px;
    font-size: 14px;
    font-weight: 200;
}

hr {border-color: rgba(52, 152, 219, 0.2);border-width: 2px;border-style: dashed;}

.height-100 {height:100px;}
.height-50 {height:50px;}
.text-100 {font-size: 40px;line-height: 100px}
.inner-shadow {box-shadow: inset 0 0 40px #AAA, 0 0 40px 10px #AAA;margin: 30px}
.top-20 {margin-top: 20px}

#color-rotating-navigation {
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 0;
    margin: 33px 0 16px;
}

#color-rotating-navigation li {
    display: inline-block;
    width: 20%;
    font-size: 16px;
    background-color: #34495e;
}

#color-rotating-navigation li:first-child {border-radius: 10px 0 0 10px}
#color-rotating-navigation li:last-child {border-radius: 0 10px 10px 0}

#color-rotating-navigation li a {
    display: block;
    padding: 10px 0;
    text-decoration: none;
    color: #ECF0F1;
}
#color-range {
    font-size: 0;
    width: 420px;
    margin: auto;
    box-shadow: 1px 1px 0px #7F8C8D, 2px 2px 0px #7F8C8D, 3px 3px 0px #7F8C8D, 4px 4px 0px #7F8C8D, 5px 5px 15px rgba(0, 0, 0, 0.35);
}

#color-range div {
    display: inline-block;
    width: 35px;
    height: 35px;
    font-size: 14px;
    line-height: 35px;
    color: #ECF0F1;
    text-shadow: 0 -1px 1px rgba(0, 0, 0, 0.4);
}