body, html {
    height: 100%;
	position: relative;
}

.left {
    opacity: 1.0;
    align: center;
    text-align: left;
    margin: 35px;
    height: auto;
    background-color: gray;
    padding: 25px;
}

.main {
	opacity: 1.0;
	align: center;
	text-align: center;
	margin: 35px;
	height: auto;    
	background-color: gray;
    padding: 25px;
}

.bg {
	z-index: -1;
	margin: 0px auto; 
    background-image: url("mdbgui2.gif");
	opacity: 0.4;
	position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    height: 100%; 
	width: 100%;    
	background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

button {
    transition: background-color 1s ease;
    background-color: #2284e6;
    border: 1px black;
	margin: 0px 0px 0px 10px;
    font-size: 12px;
    border-radius: 12px;
    padding: 6px;
}

button:hover {
    background-color: #58a9ff;
    cursor: pointer;
}

button:active {
	transition: 0s;
	background-color: blue;
}