CSS முதல் குறைவான மாற்றி

.feature-url {
    background: #f7f7f7;
    text-align: center;
}
.feature-url li {
    list-style: none;
    display: inline-block;
    margin: 2px;
    border: 1px solid #e9ebee;
    text-align: center;
}
.feature-url li a {
    padding: 5px;
    color: blue;
    display: block;
    min-width: 70px;
}
.feature-url li a i {
    font-size: 20px;
}
.feature-url li a:hover {
    text-decoration: none;
    background: #e9ebee;
    color: #222;
}
.feature-url li.active a {
    background: #e9ebee;
    color: #222;
}

@color1: #f7f7f7;
@color2: #e9ebee;
@color3: #222222;

.feature-url {
	background: @color1;
	text-align: center;
	li {
		list-style: none;
		display: inline-block;
		margin: 2px;
		border: 1px solid @color2;
		text-align: center;
		a {
			padding: 5px;
			color: blue;
			display: block;
			min-width: 70px;
			i {
				font-size: 20px;
			}
			&:hover {
				text-decoration: none;
				background: @color2;
				color: @color3;
			}
		}
		&.active a {
			background: @color2;
			color: @color3;
		}
	}
}