@import url('https://fonts.googleapis.com/css2?family=Hind:wght@300;400;500;600;700&family=Short+Stack&display=swap');

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

/* 
!!color!!
bg color : rgb(220, 220, 220);
font color : rgb(69, 69, 69); 
*/

body {
  font-family: 'Hind', sans-serif;
  width: 1400px;
  margin: 0 auto;
  border: 0.5px solid rgb(229, 229, 233);
}

/* nav bar */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-left: 24px;
    padding-right: 24px;
    height: 64px;
    width: 100%;
}

.nav-left {
    display: flex;
}

.nav-left p {
    font-size: 32px;
}

.nav-left span {
    color: rgb(190, 188, 188);
}


ul {
    display: flex;
    gap: 16px;
}

ul li {
    list-style: none;
}

li a {
    text-decoration: none;
    color: black;
}

/* section 1 */
.sec1 {
    display: flex;
    background-color: rgb(220, 220, 220);
    padding: 32px 24px 32px 24px;
} 

.sec1 h1 {
    font-size: 350%;
    width: 80%;
}

.sec1 p {
    font-size: 200%;
    width: 80%;
}

.sec1 figure {
    width: 60%;
}

.sec1 img {
    width: 100%;
}

.sec1 article {
    padding-left: 50px;
    padding-right: 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: rgb(69, 69, 69);;
    /* border: 1px solid black; */
}

.sec1 button {
    padding-top: 8px;
    padding-bottom: 8px;
    border: 0;
    background-color: rgb(69, 69, 69);
    color: white;
    font-size: 100%;
    width: 60%;
}

/* section 2 */
/* left */
.sec2 {
    display: flex;
    padding-top: 32px;
    padding-bottom: 32px;
}

.sec2-left {
    padding-left: 24px;
    padding-right: 24px;
    width: 60%;
}

.sec2-left img {
    width: 100%;
}


.sec2-left h2 {
    padding-bottom: 24px;
}

.sec2-left .emanuel {
    padding-top: 32px;
}

/* right */
.sec2-right {
    width: 40%;
    
}

.sec2-right-item {
    display: flex;
}

.sec2-right-item figure {
    width: 35%;
}

.sec2-right-item img {
    width: 100%;
    margin-bottom: 16px;
    padding-left: 16px;
}

.sec2-right-item .set-top {
    margin-top: 16px;
}

.sec2-right-item article {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: 16px;
    padding-right: 5px;
    color: rgb(69, 69, 69);
    width: 65%;
}

.sec2-right-item a {
    color: rgb(127, 186, 231);
    text-decoration: none;
}

/* section 3 */
.sec3 {
    background-color: rgb(220, 220, 220);
    padding: 32px 72px 32px 72px;
    color: rgb(69, 69, 69);
}

.sec3 h2 {
    text-align: center;
    margin-bottom: 32px;
}

.sec3-allitem {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 32px;
}

.sec3-item {
    background-color: white;
    width: 30%;
}

.sec3-item img {
    width: 100%;
}

.sec3-item article {
    padding-top: 16px;
    padding-bottom: 24px;
    padding-left: 16px;
    padding-right: 16px;
}   

.sec3-item .course {
    padding-top: 8px;
    padding-bottom: 8px;

}

/* section4 */
.sec4 {
    padding-top: 32px;
    padding-bottom: 32px;
    padding-left: 24px;
    color: rgb(69, 69, 69);
}

.sec4 h2 {
    text-align: center;
    margin-bottom: 32px;
}

/* left */
.sec4-all {
    display: flex;
}

.sec4-left {
    width: 60%;
    margin-right: 24px;
}

.sec4 video {
    width: 100%;
}

.sec4 h3 {
    padding-top: 24px;
    padding-bottom: 8px;
}

/* right */
.sec4-right {
    width: 40%;
}

.sec4-right-item {
    display: flex;
    padding-left: 16px;
    padding-top: 16px;
    padding-bottom: 16px;
}

.sec4-right-item figure {
    width: 35%;
}

.sec4-right-item img {
    width: 100%
}

.sec4-right-item article {
    width: 65%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: 16px;
}
.hr-mobile {
    height: 1px;
    background-color: rgb(224, 228, 228);
    border: 0;
}
/* footer */
hr {
    height: 1px;
    background-color: rgb(224, 228, 228);
    border: 0;
}

footer {
    padding: 16px 24px 32px 24px;
    display: flex;
    justify-content: space-between;
    color: rgb(69, 69, 69);
}
footer li a {
    color: rgb(69, 69, 69);
}


/* !!!desktop!!! */
@media only screen and (min-width: 768px){
    .nav-mobile {
         display: none; 
    }
    .img-mobile {
        display: none;
    }
    .hr-mobile {
        display: none;
    }
}


/* !!!!mobile!!! */
@media only screen and (max-width: 768px) {
    .nav-right,
    .nav-left {
        display: none;
    } 
    .nav-mobile {
        display: flex;
        align-items: center;
        justify-content: space-around;
        width: 100%;
    }

/* section 1  */
    .sec1 {
        flex-direction: column;
        padding: 0 0 32px 0;
    }
    .sec1 figure {
        width: 100%;
    }

    .sec1 article {
        padding-left: 16px;
        padding-right: 16px;
    }

    .sec1 article h1 {
        padding-top: 32px;
        padding-bottom: 32px;
    }

    .sec1 article p {
        padding-bottom: 24px;
    }

    .sec1 article br {
        display: none;
    }

    .sec1 article button {
        width: 100%;
        background-color: rgb(139, 139, 139);
    }

/* section 2 */
    .sec2 {
        padding-top: 16px;
    }

    .sec2-left {
        display: none;
    }
    .sec2-right {
        width: 100%;
    }
    .sec2-right-item {
        flex-direction: column;
        align-items: center;
    }
    .sec2-right .img-desktop,
    .sec2-right .set-top {
        display: none;
    }
    .sec2-right-item figure {
        width: 100%;
        padding-right: 16px;
    }
    .sec2-right-item article {
        width: 100%;
        padding-left: 32px;
    }
    .sec2-right-item .top-mobile {
        margin-top: 64px;
    }

/* section 3 */
    .sec3 {
        background-color: white;
        padding-left: 16px;
        padding-right: 16px;
    }
    .sec3-item img {
        display: none;
    }
    .sec3-item p {
        display: none;
    }
    .sec3-item {
        background-color: rgb(220, 220, 220);
        width: 100%;
        margin-bottom: 8px;
        padding: 0;
    }

/* section 4 */
    .sec4-right {
        display: none;
    }
    .sec4-left article {
        display: none;
    }
    .sec4-left {
        width: 100%;
        margin: 0;
    }
    .sec4 {
        padding-left: 0;
        padding-bottom: 24px;
    }
    .sec4 h2 {
        margin-bottom: 16px;
    }
/* footer */
    .hr-desktop {
        display: none;
    }
    footer {
        padding: 16px 24px 16px 24px;
    }
    footer li a {
        display: none;
    }
    
    


}