left side background color css code example

Example: left side background color css

.fullwidth {
    position: relative;
    width: 100%;
 }
.bg-left {
    background: #000; 
    left: 0;
    top: 0;
    bottom: 0;
    position: absolute;
    width: 50%;
}
.bg-right {
    right: 0;
    top: 0;
    bottom: 0;
    background: #ddd; 
    position: absolute;
    width: 50%;
}