main.css

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap");
* {
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

:root {
    --gradient: linear-gradient(90deg, #f1c40f, #f39c12);
}

* {
    font-family: "Open Sans", sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border: none;
    outline: none;
    text-decoration: none;
    transition: all 0.2s linear;
}

*::selection {
    background: #f39c12;
    color: #fff;
}

html {
    overflow-x: hidden;
}

html::-webkit-scrollbar {
    width: 0.5rem;
}

html::-webkit-scrollbar-track {
    background: #333;
}

html::-webkit-scrollbar-thumb {
    background: linear-gradient(#f1c40f, #f39c12);
}

.heading {
    color: #444;
    padding: 1rem;
    text-align: center;
    font-size: 62.5%;
}

header {
    font-size: 62.5%;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    z-index: 100;
    top: 0;
    left: 0;
    padding: 0.9em 7%;
    background: var(--gradient);
    box-shadow: 0 0.1rem 0.3rem rgba(0, 0, 0, 0.3);
}

header .logo {
    color: #fff;
    font-size: 1.5rem;
}

header .navbar ul {
    display: flex;
    align-items: center;
    justify-content: center;
    list-style: none;
    font-size: 62.5%;
}

header .navbar ul li {
    margin: 0 1rem;
    font-size: 62.5%;
}

header .navbar ul li a {
    font-size: 20px;
    color: #fff;
}

header .navbar ul li a.active,
header .navbar ul li a:hover {
    color: #444;
}

header #login {
    font-size: 1.9rem;
    color: #fff;
    cursor: pointer;
}

header #login:hover {
    color: #444;
}

header #menu {
    font-size: 3rem;
    color: rgb(146, 123, 123);
    cursor: pointer;
    display: none;
}

.btn {
    padding: 0.7rem 3rem;
    font-size: 1rem;
    color: #fff;
    background: var(--gradient);
    border-radius: 5rem;
    margin-top: 1rem;
    cursor: pointer;
    box-shadow: 0 0.1rem 0.3rem rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
    z-index: 0;
}

.btn::before {
    content: "";
    position: absolute;
    top: -1rem;
    left: -100%;
    background: #fff9;
    height: 150%;
    width: 20%;
    transform: rotate(25deg);
    z-index: -1;
}

.btn:hover::before {
    transition: 0.3s linear;
    left: 120%;
}

.login-form {
    height: 100%;
    width: 100%;
    position: fixed;
    top: -120%;
    left: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-form.popup {
    top: 0;
}

.login-form form {
    width: 30rem;
    background: #fff;
    margin: 0 2rem;
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 0.1rem 0.3rem #333;
    position: relative;
}

.login-form form h3 {
    font-size: 2rem;
    color: #f39c12;
    padding: 1rem 0;
}

.login-form form .box {
    width: 100%;
    padding: 1rem 0;
    margin: 1rem 0;
    border-bottom: 0.2rem solid #666;
    font-size: 1rem;
    color: #333;
    text-transform: none;
}

.login-form form .box::placeholder {
    text-transform: capitalize;
}

.login-form form .box:focus {
    border-color: #f39c12;
}

.login-form form .box:nth-child(3) {
    margin-bottom: 1rem;
}

.login-form form p {
    font-size: 1rem;
    color: #444;
    padding: 0.5rem 0;
}

.login-form form p a {
    color: #f39c12;
}

.login-form form .btn {
    width: 100%;
    border-radius: 15px/45px;
    background-color: #f39c12;
}

.login-form form .btn:hover {
    background: #f39c12;
}

.login-form form .fa-times {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: #999;
}

.login-form form .fa-times:hover {
    color: #444;
}

img {
    width: 100%;
}

body {
    font-family: "Poppins", sans-serif;
    line-height: 1.5;
}


/****************/

.main-container {
    width: 90vw;
    margin: 0 auto;
    padding: 40px 0;
}

.main-container>h2 {
    text-align: center;
    padding: 10px 0;
    font-size: 32px;
}

.main-container>p {
    font-weight: 300;
    padding: 10px 0;
    opacity: 0.7;
    text-align: center;
}

.category-head {
    margin: 30px 0;
}

.category-head ul {
    list-style-type: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
}
.ct-socials {
    position: fixed;
    top: 25%;
    right: 0;
    list-style: none;
    padding-left: 0;
    z-index: 40;
    margin: 0;
    -webkit-transition: right 0.25s ease-in-out;
    transition: right 0.25s ease-in-out;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
}

.ct-socials li {
    padding: 0px 0;
}

.ct-socials li a {
    background: #3f4653;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    color: #fff;
    width: 64px;
    height: 54px;
    -webkit-transition: all 0.15s ease-in-out;
    transition: all 0.15s ease-in-out;
    float: right;
    padding-left: 5px;
}

.ct-socials li a:hover {
    width: 64px;
    padding-left: 0;
    background: #3c9bd8;
}

.category-title {
    flex: 0 0 calc(16.6667% - 10px);
    display: flex;
    justify-content: center;
    background: #a8a8a8;
    padding: 12px;
    color: #fff;
    margin: 5px;
    cursor: pointer;
    transition: all 0.4s ease;
}

.category-title:hover {
    opacity: 0.7;
}

.category-title li {
    padding: 0 10px;
    font-size: 20px;
}

.category-title span {
    color: #222;
}


/** single post **/

.posts-main-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-gap: 40px;
}

.posts-main-container>div {
    box-shadow: 0px 8px 22px -12px rgba(0, 0, 0, 0.64);
}

.post-img {
    position: relative;
}

.category-name {
    position: absolute;
    top: 20px;
    left: 20px;
    text-transform: uppercase;
    font-size: 13px;
    color: #fff;
    padding: 4px 10px;
    border-radius: 2px;
}

.business .category-name {
    background: #00a7ea;
}

.culture .category-name {
    background: #f03250;
}

.politics .category-name {
    background: #f0544f;
}

.finance .category-name {
    background: #2c2a4a;
}

.sports .category-name {
    background: #a1e44d;
}

.post-content {
    padding: 25px;
}

.post-content-top {
    background: #80ced7;
    color: #fff;
    opacity: 0.8;
    padding: 5px 0 5px 15px;
}

.post-content-top span {
    padding-right: 20px;
}

.post-content-top .fa-comment,
.post-content-top .fa-calendar {
    padding-right: 5px;
}

.post-content h2 {
    font-size: 22px;
    padding: 12px 0;
    font-weight: 400;
}

.post-content p {
    opacity: 0.7;
    font-size: 15px;
    line-height: 1.8;
}

.read-btn {
    border: none;
    padding: 8px 15px;
    display: block;
    margin: 5px auto;
    font-family: "Poppins", sans-serif;
    font-size: 15px;
    cursor: pointer;
    border: 1px solid #292929;
    background: transparent;
    margin-bottom: 40px;
}

.read-btn:hover {
    background: #f6f6f6;
}


/***************/

@media (max-width: 1170px) {
    .posts-main-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .posts-main-container {
        grid-template-columns: 1fr;
    }
}


/***********/

.active {
    background: #f0544f;
}


/* media queries  */

@media (max-width: 768px) {
    header #menu {
        display: block;
    }
    header .navbar {
        position: fixed;
        top: -120%;
        left: 0;
        width: 100%;
        background: #444;
    }
    header .navbar ul {
        flex-flow: column;
        padding: 2rem 0;
    }
    header .navbar ul li {
        margin: 1.5rem 0;
        text-align: center;
        width: 100%;
    }
    header .navbar ul li a {
        font-size: 2.5rem;
        display: block;
    }
    header .navbar ul li a.active,
    header .navbar ul li a:hover {
        color: #f39c12;
    }
    .fa-times {
        transform: rotate(180deg);
    }
    header .navbar.nav-toggle {
        top: 6.4rem;
    }
    .home h1 {
        font-size: 4rem;
    }
    .home p {
        width: auto;
    }
    .teacher p {
        width: auto;
    }
    .contact .row .image {
        display: none;
    }
}

@media (max-width: 500px) {
    .contact .row form .box {
        width: 100%;
    }
}

.footer {
    background: rgb(119, 119, 119);
}

.footer .box-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.footer .box-container .box {
    margin: 0.5rem;
    text-align: center;
    flex: 1 1 1rem;
}

.footer .box-container .box h3 {
    font-size: 0, 7rem;
    color: #fff;
    padding: 1rem 0;
}

.footer .box-container .box p {
    font-size: 1rem;
    color: #eee;
    padding: 0.7rem 0;
}

.footer .box-container .box p i {
    padding-right: 0.5rem;
    color: #f39c12;
}

.footer .box-container .box a {
    font-size: 0.8rem;
    display: block;
    padding: 0.5rem 0;
    color: #eee;
}

.footer .box-container .box a:hover {
    text-decoration: underline;
}

.footer .credit {
    padding: 1rem 1rem;
    font-size: 1rem;
    color: #fff;
    background: #111;
    text-align: center;
    font-weight: normal;
    padding-bottom: 5rem;
}

.footer .credit a {
    color: #f39c12;
}


/* media queries  */

@media (max-width: 768px) {
    header #menu {
        display: block;
    }
    header .navbar {
        position: fixed;
        top: -120%;
        left: 0;
        width: 100%;
        background: #444;
    }
    header .navbar ul {
        flex-flow: column;
        padding: 2rem 0;
    }
    header .navbar ul li {
        margin: 1.5rem 0;
        text-align: center;
        width: 100%;
    }
    header .navbar ul li a {
        font-size: 2.5rem;
        display: block;
    }
    header .navbar ul li a.active,
    header .navbar ul li a:hover {
        color: #f39c12;
    }
    .fa-times {
        transform: rotate(180deg);
    }
    header .navbar.nav-toggle {
        top: 6.4rem;
    }
    .home h1 {
        font-size: 4rem;
    }
    .home p {
        width: auto;
    }
    .teacher p {
        width: auto;
    }
    .teacher .row .image {
        display: none;
    }
    .contact .row .image {
        display: none;
    }
}

@media (max-width: 500px) {
    .contact .row form .box {
        width: 100%;
    }
}

@media (max-width: 768px) {
    header #menu {
        display: block;
    }
    .fas fa-bars {
        display: block;
    }
    header .navbar {
        position: fixed;
        top: -120%;
        left: 0;
        width: 100%;
        background: #444;
    }
    header .navbar ul {
        flex-flow: column;
        padding: 2rem 0;
    }
    header .navbar ul li {
        margin: 1.5rem 0;
        text-align: center;
        width: 100%;
    }
    header .navbar ul li a {
        font-size: 2.5rem;
        display: block;
    }
    header .navbar ul li a.active,
    header .navbar ul li a:hover {
        color: #f39c12;
    }
    .fa-times {
        transform: rotate(180deg);
    }
    header .navbar.nav-toggle {
        top: 6.4rem;
    }
    .home h1 {
        font-size: 4rem;
    }
    .home p {
        width: auto;
    }
    .teacher p {
        width: auto;
    }
    .teacher img {
        display: none;
    }
    .contact .row .image {
        display: none;
    }
}

@media (max-width: 500px) {
    html {
        font-size: 70%;
    }
    .contact .row form .box {
        width: 100%;
    }
}