* {
    margin: 0px;
    box-sizing: border-box;
}

body {
    font-family: 'Avenir Next LT Pro', sans-serif;
    max-width: 1280px;
    margin: auto;
}

.mmenu {
    display: none;
}

nav {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    height: 64px;

}

#logo {
    margin-left: 24px;
    height: 32px;
    margin-top: 16px;
    margin-bottom: 16px;
}

#logo img {
    height: 36px;
    margin-top: 5px;


}

#logo h1 {
    display: inline-block;
    color: #4a4a4a;

}

#logo span {
    color: #9b9b9b
}

#menu {
    display: flex;
    flex-direction: row;
}

#menu h1 {
    margin: auto 16px auto 0;
}

#menu h1:last-child {
    margin: auto 24px auto 0px;
}

#banner-container {

    display: flex;
    align-items: center;
    padding: 32px 24px;
    background-color: #d7d7d7;
}

#banner-container img {
    width: 60%;
}

#banner-container #banner-text {
    max-width: 300px;
    display: flex;
    flex-direction: column;
    margin-left: 24px;
}

#banner-container #banner-text h1 {
    margin-top: 24px;
    color: #4a4a4a;
    font-weight: 900;
}

#banner-container #banner-text p {
    color: #4a4a4a;
    margin-top: 24px;
    font-weight: bold;
}

#banner-container #banner-text button {
    color: white;
    background-color: #4a4a4a;
    border: unset;
    padding: 8px 0px;
    margin-top: 24px;
}

#content {
    display: flex;
    flex-direction: row;
    width: 100%;

}

#hilight {
    width: 60%;
    margin: 32px 24px;
}

#hilight img {
    width: 100%;
}

#hilight h1 {
    color: #4a4a4a;
    margin: 32px 0 24px 0;
    font-weight: bold;
}

#hilight p {
    color: #4a4a4a;
    margin-bottom: 24px;
    line-height: 20px;
}

#hilight footer {
    color: #4a4a4a;
    margin-bottom: 32px;
    font-weight: 300;
}

.story {
    width: 100%;
    display: flex;
    flex-direction: row;

    border: #cecccc 1px solid;
}

.story:first-child {
    margin-top: 32px;
}

.story:last-child {
    margin-bottom: 32px;
    background-color: #d3d3d3;
}

.story img {
    width: 35%;
    margin: 16px;
}

.story-detail {
    margin: auto 0;
}

.story-detail h1 {
    color: #4a4a4a;
}

.story-detail p {
    color: #4a4a4a;
    margin: 8px 0;
}

.story a {
    text-decoration: none;
    color: rgb(109, 118, 240);
}

.pic-mobile {
    display: none;
}

#Start-learning {
    background-color: #9b9b9b3d;
    padding: 32px 72px;
}

#Start-learning h1 {
    text-align: center;
    color: #4a4a4a;
    font-size: 50px;
    margin-bottom: 32px;
}

#couse {
    width: 100%;
    display: flex;
    flex-direction: column;
}

#row1 {

    display: flex;
    flex-direction: row;
    justify-content: space-around;
}

.couse-menu {
    max-width: 30%;
    background-color: white;

    margin: 0 32px 32px 0;
    padding: 0 0 10px 0;
}

.couse-menu h2 {
    margin-top: 16px;
    margin-left: 16px;
    color: #4a4a4a;
}

.couse-menu p {
    margin: 8px 0px 8px 16px;
}

.couse-menu img {
    width: 100%;
}

.couse-menu:last-child {
    margin-right: 0px;
}

#row2 {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
}

#couse-mobile {
    display: none;
}

#thesis h1 {
    text-align: center;
    margin: 32px 0px 0px 0px;
    color: #4a4a4a;
}

#thesis-content {
    width: 100%;
    display: flex;
    flex-direction: row;
}

#thesis-left video {
    width: 100%;

}

#thesis-left {
    width: 60%;
    padding: 32px 24px 24px 24px;
}

#thesis-left h2 {
    margin: 24px 0px 8px 0px;
    color: #4a4a4a;
}

#thesis-left p {
    color: #4a4a4a;
}

hr {
    margin-bottom: 16px;
}

#endcardit {

    color: #4a4a4a;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    padding: 16px 10px 16px 24px;
}