* {
	margin: 0;
	padding: 0;
	font-family: 'Poppins', sans-serif;
}
.header {
	min-height: 100vh;
	width: 100%;
	background-image: linear-gradient(rgba(4,9,30,0.7), rgba(4,9,30,0.7)), url(images/banner.jpg);
	background-position: center;
	background-size: cover;
	position: relative;
}
nav {
	display: flex;
	padding: 2% 6%;
	justify-content: space-between; /* исправлено "space-betweeen" */
	align-items: center;
}
nav img {
	width: 150px;
}
.nav-links {
	flex: 1;
	text-align: right;
}
.nav-links ul li {
	list-style: none;
	display: inline-block;
	padding: 8px 12px;
	position: relative;
}
.nav-links ul li a {
	color: #fff;
	text-decoration: none;
	font-size: 13px;
}
.nav-links ul li::after {
	content: "";
	width: 0%;
	height: 2px;
	background: #f44336;
	display: block;
	margin: auto;
	transition: 0.5s;
}
.nav-links ul li:hover::after { /* исправлено .nav-link -> .nav-links */
	width: 100%;
}
.text-box {
	width: 90%;
	color: #777;
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%); /* исправлено пробел */
	text-align: center;
}
.text-box h1 {
	font-size: 62px;
}
.text-box p {
	margin: 10px 0 40px;
	font-size: 14px;
	color: #000;
}
.hero-btn {
	display: inline-block;
	text-decoration: none;
	color: #fff;
	border: 1px solid #000;
	padding: 12px 34px;
	font-size: 13px;
	background: transparent;
	position: relative;
	cursor: pointer;
}
.hero-btn:hover {
	border: 1px solid #f44336;
	background: #f44336;
	transition: 1s;
}

nav .fa {
	display: none;
}

@media(max-width: 700px) {
	.text-box h1 {
		font-size: 20px;
	}
	.nav-links ul li {
		display: block;
	}
	.nav-links {
		position: absolute;
		background: #f44336;
		height: 100vh;
		width: 200px;
		top: 0;
		right: -200px;
		text-align: left;
		z-index: 2;
		transition: 1s;
	}
	nav .fa {
		display: block;
		color: #000;
		margin: 10px;
		font-size: 22px;
		cursor: pointer;
	}
	.nav-links ul {
		padding: 30px;
	}
}

/*-------------course ----------*/

.course {
	width: 80%;
	margin: auto;
	text-align: center;
	padding-top: 100px;
}
h1 {
	font-size: 36px;
	font-weight: 600;
}
p {
	color: #777;
	font-size: 14px;
	font-weight: 300;
	line-height: 22px;
	padding: 10px;
}
.row {
	margin-top: 5%;
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
}

.course-col {
	flex-basis: 31%;
	background: #fff3f3;
	border-radius: 10px;
	margin-bottom: 5%;
	padding: 20px 12px;
	box-sizing: border-box;
	transition: 0.5s;
}
h3 {
	text-align: center;
	font-weight: 600;
	margin: 10px 0;
}

.course-col:hover {
	box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.2);
}

@media(max-width: 700px) {
	.row {
		flex-direction: column;
	}
}

/*-------------- campus ----------*/

.campus {
	width: 80%;
	margin: auto;
	text-align: center;
	padding-top: 50px;
}

.campus-col {
	flex-basis: 32%;
	border-radius: 10px;
	margin-bottom: 30px;
	position: relative;
	overflow: hidden;
}

.campus-col img {
	width: 100%;
	height: auto;
	display: inline-block;
	border-radius: 10px;
}

.layer {
	background: transparent;
	height: 100%;
	width: 100%;
	position: absolute;
	top: 0;
	left: 0;
	transition: 0.5s;
}
.layer:hover {
	background: rgba(226, 0, 0, 0.7);
}
.layer h3 {
	width: 100%;
	font-weight: 500;
	color: #fff;
	font-size: 26px;
	bottom: 0;
	left: 50%;
	transform: translateX(-50%);
	position: absolute;
	opacity: 0;
	transition: 0.5s;
}
.layer:hover h3 {
	bottom: 49%;
	opacity: 1;
}

/*------- facilities -------*/

.facilities {
	width: 80%;
	margin: auto;
	text-align: center;
	padding-top: 100px;
}
.facilities-col {
	flex-basis: 31%;
	border-radius: 10px;
	margin-bottom: 5%;
	text-align: left;
}
.facilities-col img {
	width: 100%;
	border-radius: 10px;
}
.facilities-col p {
	padding: 0;
}
.facilities-col h3 {
	margin-top: 16px;
	margin-bottom: 15px;
	text-align: left;
}

/*------ testimonial ------*/

.testimonial {
	width: 80%;
	margin: auto;
	padding-top: 100px;
	text-align: center;
}
.testimonial-col {
	flex-basis: 44%;
	border-radius: 10px;
	margin-bottom: 5%;
	text-align: left;
	background: #fff3f3;
	padding: 25px;
	cursor: pointer;
	display: flex;
}
.testimonial-col img {
	height: 40px;
	margin-left: 5px;
	margin-right: 30px;
	border-radius: 50%;
}
.testimonial-col p {
	padding: 0;
}
.testimonial-col h3 {
	margin-top: 15%;
	text-align: left;
}
.testimonial-col .fa {
	color: #f44336;
}
@media(max-width: 700px) {
	.testimonial-col img {
		margin-left: 0px;
		margin-right: 15px;
	}
}

/*------call to action ------*/

.cta {
	margin: 100px auto;
	width: 80%;
	background-image: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url(images/banner1.jpg);
	background-position: center;
	background-size: cover;
	border-radius: 10px;
	text-align: center;
	padding: 100px 0;
}

.cta h1 {
	color: #fff;
	margin-bottom: 40px;
	padding: 0; /* исправлено с "padding;" на "padding:" */
}
@media(max-width: 700px) {
	.cta h1 {
		font-size: 24px;
	}
}

/*------ footer -----*/

.footer {
	width: 100%; /* исправлено с 100px на 100% */
	text-align: center;
	padding: 30px 0;
}

.footer h4 {
	margin-bottom: 25px;
	margin-top: 20px;
	font-weight: 600;
}
.icons .fa {
	color: #f44336;
	margin: 0 13px;
	cursor: pointer;
	padding: 18px 0;
}
.fa-heart-o {
	color: #f44336;
}

/*--------------- about page --------------*/

.sub-header {
	height: 50vh;
	width: 100%;
	background-image: linear-gradient(rgba(4,9,30,0.7), rgba(4,9,30,0.7)), url(images/banner1.jpg); /* исправлена синтаксис */
	background-position: center;
	background-size: cover;
	text-align: center;
	color: #fff;
}

.sub-header h1 {
	margin-top: 100%; /* проверь, возможно тут надо меньше значение */
}

.about { /* исправлен класс, так как пробел нельзя */
	width: 80%;
	margin: auto;
	padding-top: 80px;
	padding-bottom: 50px;
}
.about-col {
	flex-basis: 48%;
	padding: 30px 2px;
}
.about-col img {
	width: 50%;
}

.about-col h1 {
	padding-top: 0;
}
.about-col p {
	padding: 15px 0 25px;
}
.red-btn {
	border: 1px solid #f44336;
	background: transparent;
	color: #f44336;
}
.red-btn:hover {
	color: #fff;
}

/*----------------- blog-content ---------------*/

.blog-content {
	width: 80%;
	margin: auto;
	padding: 60px 0;
}

.blog-left {
	flex-basis: 65%;
}

.blog-left img {
	width: 80%;
}
.blog-left h2 {
	color: #222;
	font-weight: 600;
	margin: 30px 0;
}

.blog-left p {
	color: #999;
	padding: 0;
}

.blog-right {
	flex-basis: 32%;
}

.blog-right h3 {
	background: #f44366;
	color: #0000; /* цвет некорректный, возможно хотел transparent или #000 */
	padding: 7px 0;
	font-size: 14px;
	margin-bottom: 20px;
}
.blog-right div {
	display: flex;
	align-items: center;
	justify-content: space-between;
	color: #555;
	padding: 8px;
	box-sizing: border-box;
}
.comment-box {
	border: 1px solid #ccc;
	margin: 50px 0;
	padding: 10px 20px;
}

.comment-box h3 {
	text-align: left;
}

.comment-form input,
.comment-form textarea {
	width: 100%;
	padding: 10px;
	margin: 15px 0;
	box-sizing: border-box;
	border: none;
	outline: none;
	background: #f0f0f0;
}
.comment-form button {
	margin: 10px 0;
}

@media(max-width: 700px) {
	.sub-header h1 {
		font-size: 24px;
	}
}

/*------------------- contact page -----------------*/

.location {
	width: 80%;
	margin: auto;
	padding: 80px 0;
}
.location iframe {
	width: 100%;
}
.contact {
	width: 80%;
	margin: auto;
}

.contact-col {
	flex-basis: 48%;
	margin-bottom: 30px;
}

.contact-col div .fa {
	font-size: 28px;
	color: #f44336;
	margin: 10px;
	margin-right: 30px;
}

.contact-col div p {
	padding: 0;
}

.contact-col div h5 {
	font-size: 20px; /* добавлен px */
	margin-bottom: 5px;
	color: #555;
	font-weight: 400;
}
.contact-col input,
.contact-col textarea {
	width: 100%;
	padding: 15px;
	margin-bottom: 17px;
	outline: none;
	border: 1px solid #ccc;
	box-sizing: border-box;
}