style.css

html{
    box-sizing: border-box;
    font-size: 62.5%;
}
*,* :before, *:after{
    box-sizing: inherit;
}
body{
    font-size: 1.6rem;
    line-height: 2;
    background: linear-gradient(to right, #0f3443,  #34e89e);
}

/* Generals*/
h1{
    margin: 0;
    font-size: 8rem;
}
h2{
    margin: 0;
    font-size: 6rem;
}
h4{
    margin: 0;
    font-size: 2.8rem;
}
a{
    text-decoration: none;
}
p{
    margin: 0;
    font-size: 1.8rem;
}
.title{
    display: inline-block;
    position: relative;
}
.title::after,.title::before{
    content: '';
    position: absolute;
    width: 12rem;
    height: .4rem;
    background-color: black;
    top: 6.5rem;
}
.title::after{
    left: -14rem;
}
.title::before{
    right: -14rem;
}
img{
    width: 100%;
    
}
.course{
    font-weight: bold;
}    

/* Header */
.Introduction{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 8rem 20rem 2rem;
    text-align: center;
}

/* Projects */
.Projects{
    text-align: center;
}


.container{
    width: 100%;
    max-width: 180rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}
.container .card{
    width: 33rem;
    height: 43rem;
    border-radius: 0.8rem;
    box-shadow: 0 0.2rem 0.2rem rgba(0, 0, 0, 0.2);
    overflow: hidden;
    margin: 2rem;
    text-align: center;
    transition: all 0.25s;
    background-color: whitesmoke;
}
.container .card .card_title{
    margin: 0;
    font-size: 2.8rem;
}
.container .card .card_info{
    margin: 0 2rem;
    font-size: 1.8rem;
}
.container .card:hover{
    transform: translateY(-15px);
    box-shadow: 0 1.2rem 1.6rem rgba(0, 0, 0, 0.2);
}
.container .card .card_title{
    font-weight: 600;
}
.container .card .card_info{
    padding: 0 1rem;
    font-size: 1.6rem;
    font-weight: 300;
}

.card_buttons{
    margin-top: 2rem;
}
#preview, #code{
    background-color: black;
    border-radius: 1.5rem;
    margin: 1.5rem;
}