/* I always reset all the html elements */
*{
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body{
	font-family: sans-serif;
	min-height: 100%;
	color: #555;
}

/* NAVIGATION RULES --------------------  */
nav{
	display: grid;
	grid-template-columns: auto 1fr;
	align-items: center;
	grid-column-gap: 30px;
	grid-template-rows: 70px;
	box-shadow: 0 5px 5px rgba(0,0,0,0.15);
	position: sticky;
	top: 0;
	background-color: white;
	padding-left: 20px;
	padding-right: 20px;
}

nav .brand{
	font-size: 28px;
	font-weight: 900;
	color: #245990;
}

nav a{
	text-decoration: none;
	display: inline-block;
	padding: 10px 35px;
	transition: background-color 0.3s, color 0.3s;
	color: #245990;
	font-size: 18px;
}

nav a:hover,
nav a.active{
	background: #4d9176;
	color: #fff;
	border-radius: 3px;
}
nav a:active{
	background-color: red;
}

/* HEADER RULES ------------------ */
header{
	padding: 40px 20px;
	background-color: #f4f4f4;
}
header h1{}
header .sub-title{
	margin-top: 20px;
	line-height: 28px;
}

/* MAIN SECTION ------------------ */
main{
	padding: 20px;
	display: grid;
	grid-template-columns: auto 1fr;
	grid-column-gap: 30px;
	margin-top: 30px;
	margin-bottom: 30px;
}
main .left{
	border-right: thin solid #d4d4d4;
	padding-right: 20px;
}
main .section-title{
	font-size: 22px;
	margin-bottom: 30px;
}
main .left a{
	display: block;
	text-decoration: none;
	color: #555;
	font-size: 18px;
	margin-bottom: 10px;
}
main .left a:hover{
	text-decoration: underline;
}

main .right{}
main .right .product{
	display: grid;
	 grid-template-columns: auto 1fr;
	grid-column-gap: 50px;
	grid-row-gap: 50px;
}
main .right .product-left{}
main .right .product-left img{
	height: 150px;
	display: block;
	margin: 0 auto;
}
main .right .product-right{}
main .right .product-right .title{
	font-weight: bold;
	font-size: 18px;
}
main .right .product-right .title a{
	text-decoration: none;
	color: #555;
}
main .right .product-right .title a:hover{
	text-decoration: underline;
}
main .right .product-right .description{
	margin-top: 10px;
}
main .right .product-right .price{
	font-size: 24px;
	margin-top: 30px;
	color: darkred;
}
main .right .product-right button{
	display: block;
	border: none;
	font-size: 18px;
	padding: 10px 30px;
	margin-top: 50px;
	border: thin solid #d4d4d4;
}

/* FOOTER RULES  */
footer{
	background-color: #333;
	padding: 20px;
	width: 100%;
	color: white;
}