* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}

html::-webkit-scrollbar {
    display: none;
}

html {
    scrollbar-width: none;
}

#header {
    height: 100vh;
    background-image: url(images/background.png);
    background-position: center;
    background-size: cover;
}

.container {
    margin: 0 100px;
}

.logo {
    margin-top: 30px;
    width: 100px;
}

.header-text {
    max-width: 350px;
    margin-top: 140px;
}

h1 {
    font-size: 34px;
}

.square {
    height: 12px;
    width: 12px;
    display: inline-block;
    background: #f67c92;
    margin: 15px 0;
}

.common-btn {
    padding: 18px 40px;
    background: transparent;
    outline: none;
    border: 2px solid #f67c92;
    cursor: pointer;
    font-weight: bold;
}

p {
    font-size: 15px;
    line-height: 18px;
    color: #777;
}

.header-text button {
    margin-top: 20px;
    margin-bottom: 60px;
}

.line-1 {
    width: 15px;
    height: 15px;
    background: #f67c92;
    display: inline-block;
}

.line-2 {
    width: 80px;
    height: 1px;
    background: #f67c92;
    display: inline-block;
}

.line-3 {
    width: 60px;
    height: 1px;
    background: #f67c92;
    display: inline-block;
}

.line {
    line-height: 8px;
}

#sideNav {
    width: 250px;
    height: 100vh;
    position: fixed;
    top: 0;
    right: -250px;
    background: #f67c92;
    z-index: 2;
    transition: .5s;
}

nav ul li {
    list-style-type: none;
    margin: 50px 20px;
}

nav ul li a {
    text-decoration: none;
    color: #fff;
}

#menuBtn {
    width: 50px;
    position: fixed;
    top: 35px;
    right: 65px;
    z-index: 2;
    cursor: pointer;
}

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

#about,
#offer {
    padding: 100px 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.about-left-col {
    flex-basis: 50%;
}

.about-left-col img {
    width: 100%;
}

.about-right-col {
    flex-basis: 50%;
    text-align: right;
}

.about-text {
    max-width: 500px;
    margin-right: 100px;
    display: inline-block;
}

.about-text h2 {
    margin: 50px 0 10px;
    font-size: 28px;
    font-style: italic;
}

.about-text h3 {
    font-size: 20px;
    font-style: italic;
    color: #797979;
}

/*------- features ------*/
#feature {
    padding: 50px 0;
}

.feature-row {
    width: 80%;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-around;
    flex-wrap: wrap;
}

.feature-col {
    flex-basis: 25%;
    text-align: center;
}

.feature-col img {
    width: 100px;
}

.feature-col h4 {
    margin-bottom: 15px;
    font-size: 20px;
    font-weight: 400;
}

.feature-btn {
    margin: 80px auto 0;
    display: flex;
    align-items: flex-end;
    justify-content: center;
}

.feature-btn .line {
    text-align: right;
    display: inline-block;
    margin-right: 25px;
}

/*------- courses ------*/
#courses {
    padding: 100px 0;
}

.course-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.course-left-col {
    flex-basis: 50%;
}

.course-right-col {
    flex-basis: 50%;
}

.course-right-col img {
    width: 100%;
}

.course-text {
    max-width: 350px;
}

.course-text button {
    margin: 30px 0;
}

/*------- offer ------*/
#offer button {
    margin: 30px 0;
}

/*------- contact ------*/
#contact {
    padding: 100px 0;
}

.contact-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.contact-left-col,
.contact-right-col {
    flex-basis: 50%;
}

.contact-right-col img {
    width: 100%;
}

form {
    max-width: 350px;
    margin: 30px 0;
}

form input {
    width: 100%;
    padding: 12px 10px;
    margin-bottom: 5px;
    outline: none;
    box-shadow: none;
    box-sizing: border-box;
    border: 2px solid #fab3c4;
}

.btn-box {
    width: 100%;
    display: flex;
    justify-content: space-between;
}

.btn-box button {
    flex-basis: 48%;
    padding: 18px 0;
}

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

#footer {
    padding: 50px 0 30px;
}

hr {
    width: 100%;
    border: 0;
    border-top: 1px solid #fab3c4;
}

#footer-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.footer-left-col {
    flex-basis: 50%;
    margin-top: 60px;
}

.footer-right-col {
    flex-basis: 35%;
}

.footer-links {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.link-titles h4 {
    color: #fab3c4;
    margin-bottom: 20px;
}

.link-titles small {
    font-size: 13px;
    color: #777;
}

.footer-info {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
}

.footer-logo img {
    width: 100px;
}

.footer-logo button {
    padding: 12px 38px;
    margin-top: 20px;
    font-size: 10px;
}

.copyright-text,
.footer-logo {
    flex-basis: 40%;
}

/*------- socialmedia-icons ------*/

.socialmedia-icons {
    width: 50px;
    position: fixed;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    z-index: 1;
}

.socialmedia-icons img {
    display: block;
    width: 20px;
    margin: 0 auto 20px;
    cursor: pointer;
}


@media only screen and (max-width: 770px) {
    #header {
        background-image: none;
    }

    .container {
        margin: 0 50px;
    }

    .logo {
        margin-top: 27px;
        width: 70px;
    }

    .header-text {
        margin-top: 100px;
    }

    h1 {
        font-size: 25px;
    }

    #menuBtn {
        width: 20px;
        right: 50px;
    }

    .common-btn {
        padding: 10px 16px;
    }

    .socialmedia-icons img {
        width: 15px;
        margin: 15px auto;
    }

    .about-left-col,
    .about-right-col {
        flex-basis: 100%;
    }

    .about-text {

        margin: 50px 50px 0;
        display: inline-block;
    }

    .about-text h2 {
        font-size: 18px;
    }

    .feature-col {
        flex-basis: 100%;
        margin-bottom: 20px;
    }

    .course-left-col {
        flex-basis: 100%;
    }

    .course-right-col {
        flex-basis: 100%;
        margin-top: 70px;
    }

    .contact-left-col,.contact-right-col {
        flex-basis: 100%;
    }

    .contact-right-col {
        margin-top: 50px;
    }
    .footer-left-col {
        flex-basis: 100%;
    }
    
    .footer-right-col {
        flex-basis: 100%;
    }
    .link-titles {
        flex-basis: 50%;
        margin-bottom: 30px;
    }
}