#checkbox1_proxy {
    background: url('../source/iconos-web/html.png');
    width: 64px;
    height: 64px;
}

#checkbox1_proxy_checked {
    background: url('../source/iconos-web/html-checked.png');
	filter: brightness(120%);
    width: 64px;
    height: 64px;
}

#checkbox2_proxy {
    background: url('../source/iconos-web/css.png');
    width: 64px;
    height: 64px;
}

#checkbox2_proxy_checked {
    background: url('../source/iconos-web/css-checked.png');
	filter: brightness(120%);
    width: 64px;
    height: 64px;
}

#checkbox3_proxy {
    background: url('../source/iconos-web/xml.png');
    width: 64px;
    height: 64px;
}

#checkbox3_proxy_checked {
    background: url('../source/iconos-web/xml-checked.png');
	filter: brightness(120%);
    width: 64px;
    height: 64px;
}

#checkbox4_proxy {
    background: url('../source/iconos-web/php.png');
    width: 64px;
    height: 64px;
}

#checkbox4_proxy_checked {
    background: url('../source/iconos-web/php-checked.png');
	filter: brightness(120%);
    width: 64px;
    height: 64px;
}

#checkbox5_proxy {
    background: url('../source/iconos-web/jsp.png');
    width: 64px;
    height: 64px;
}

#checkbox5_proxy_checked {
    background: url('../source/iconos-web/jsp-checked.png');
	filter: brightness(120%);
    width: 64px;
    height: 64px;
}

#checkbox6_proxy {
    background: url('../source/iconos-web/asp.net.png');
    width: 64px;
    height: 64px;
}

#checkbox6_proxy_checked {
    background: url('../source/iconos-web/asp.net-checked.png');
	filter: brightness(120%);
    width: 64px;
    height: 64px;
}

.checkbox-div {
	text-align: center;
	float: left;
	margin: 20px;
}

.checkbox-div:hover {
	cursor: pointer;
}