style.css

* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
html {
    font-size: 10px;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    scroll-behavior: smooth;
    background-color: #000000
}
a {
    text-decoration: none;
}
.container{
    min-height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}
img{
    height: 100%;
    width: 100%;
    object-fit: cover;
}

/* Pagina inicial */

#presentation{
    background-image: url(./img/back_1.jpg);
    background-size: cover;
    background-position: top center;
    position: relative;
    z-index: 1;
}
#presentation h1{
    display: block;
    width: fit-content;
    font-size: 4rem;
    position: relative;
    color: transparent;
    animation: text_reveal 0.5s ease forwards;
    animation-delay: 1.5s;
}
#presentation h1:nth-child(1){
    animation-delay: 0.8s;
}
#presentation h1:nth-child(2){
    animation-delay: 1.8s;
}
#presentation h1:nth-child(3){
    animation: text_reveal_name .5s ease forwards;
    animation-delay: 2.8s;
}
#presentation .cta{
    display: inline-block;
    padding: 10px  30px;
    color: #ff6600;
    background-color: transparent;
    border: 2px solid #ff6600;
    border-radius: 1rem;
    text-transform: uppercase;
    letter-spacing: .1rem;
    margin-top: 1.9rem;
    font-size: 1.5rem;
    transition: .2s ease;
    transition-property: background-color, color;
}
#presentation .cta:hover{
    color: white;
    font-weight: 500;
    background-color: #ff6600;
}
#presentation h1 span{
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0%;
    animation: text_reveal_box 1s ease;
    animation-delay: 0.5s;
    background-color: #ff6600;
}
#presentation h1:nth-child(1) span{
    animation-delay: 0.5s;
}
#presentation h1:nth-child(2) span{
    animation-delay: 1.4s;
}
#presentation h1:nth-child(3) span{
    animation-delay: 2.5s;
}
#presentation::after{
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    background-color: black;
    opacity: 0.87;
    z-index: -1;
}

/* Margin DIV's para estudo de DIV*/
.margindiv{
    border: 3px solid red;
}

/* Seção de projetos*/

#portfolio .portfolio{
    flex-direction: column;
    max-width: 1200px;
    margin: 0 auto;
    padding: 50px 0;
}
#portfolio .portfolio-header {
    border: 3px solid transparent;
    border-image: linear-gradient(to left bottom, #ff6600, white);
    border-image-slice: 1;
    padding: 20px;
    text-align: center;
    justify-items: center;
    margin-bottom: 50px;
}
#portfolio .portfolio-header h1{
    align-content: center;
    color: white;
    font-size: 3rem;
    font-weight: 600;
    letter-spacing: 0.15rem;
    text-transform: uppercase;
}
#portfolio .all-projects{
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}
#portfolio .project-item{
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    width: 80%;
    margin: 20px auto;
    overflow: hidden;
    border-radius: 10px;
}
#portfolio .project-info{
    color: white;
    padding: 30px;
    flex-basis: 50%;
    height: 100%;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    flex-direction: column;
    background-image: linear-gradient(60deg, #ff6600 0%, rgb(138, 62, 27) 100%); 
}
#portfolio .project-info a{
    color: white;
}
#portfolio .project-info h1{
    font-size: 3rem;
    font-weight: 600;
}
#portfolio .project-info h2{
    font-size: 1.9em;
    font-weight: 500;
    margin-top: 10px;
}
#portfolio .project-info p{
    font-size: 1.4em;
    font-weight: 500;
    margin-top: 10px;
}
#portfolio .project-img{
    flex-basis: 50%;
    height: 300px;
    overflow: hidden;
    position: relative;
}
#portfolio .project-img:after{
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    background-image: linear-gradient(90deg, #101820 0%, #485563 100%);
    opacity: 0.5;
}
#portfolio .project-img img{
    transition: 1s ease transform;
}
#portfolio .project-item:hover .project-img img{
    transform: scale(1.1);
}

/* Informações */

#sobre .perfil{
    border-radius: 50%;
    width: 100%;
    max-width: 300px;
    border: 3px solid #ff6600;
}
#sobre .foto{

    text-align: center;
    padding: 10px;
    max-width: 40%;
    min-width: 20%;
}
#sobre .info{
    padding-left: 2%;
    margin-right: 3%;
    align-items: center;
    justify-content: center;
    display: block;
}
#sobre .info h2{
    text-align: center;
    margin-bottom: 10px;
}
#sobre .info span{
    margin-bottom: 15px;
    text-align: center;
    background-color: #ff6600;
    color: #ffffff;
    font-size: 1.3rem;
    font-weight: 600;
}

#sobre .infos{
    color: white;
    font-size: 1.4rem;
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    justify-content: right;
    width: 80%;
    max-width: 1200px;
    margin: 20px auto;
    overflow: hidden;
    border-radius: 10px;
}
#sobre .cta{
    display: inline-block;
    padding: 10px  30px;
    color: #ff6600;
    background-color: transparent;
    border: 2px solid #ff6600;
    border-radius: 1rem;
    text-transform: uppercase;
    letter-spacing: .1rem;
    margin-top: 1.9rem;
    font-size: 1.5rem;
    transition: .2s ease;
    transition-property: background-color, color;
}
#sobre .cta:hover{
    color: white;
    font-weight: 500;
    background-color: #ff6600;
}


/* Keyframes*/
@keyframes text_reveal{
    100%{
        color: white;
    }
}
@keyframes text_reveal_name{
    100%{
        color: #ff6600;
        font-weight: 500px;
    }
}
@keyframes text_reveal_box{
    50%{
        width: 100%;
        left: 0;
    }
    100%{
        width: 0;
        left: 100%;
    }
}

@media only screen and (min-width: 768px){
    #portfolio .project-item{
        flex-direction: row;
        height: 400px;
        margin: 0;
        width: 100%;
        border-radius: 0;
    }
    #portfolio .all-projects .project-info{
        height: 100%;
    }
    #portfolio .all-projects .project-img{
        height: 100%;
    }
    #portfolio .project-item:nth-child(even){
        flex-direction: row-reverse;
    }
}