/* reset geral do css */

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

body {
    background-color: #111;
    font-family: 'Montserrat', sans-serif;
    height: 100vh;
    font-size: 16px;
    color: #eee;
}


/* se a tela tiver pelo menos 499px vai carregar estes estilos */

@media (min-width: 768px) {
    body {
        font-size: 18px;
    }
}

@media (min-width: 992px) {
    body {
        font-size: 20px;
    }
}

header {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.menu {
    background-color: rgba(255, 255, 255, 0.9);
    position: fixed;
    width: 100vw;
    top: 0;
    z-index: 1;
}

.menu ul {
    display: flex;
    justify-content: space-around;
}

.menu li {
    list-style: none;
}
.menu a {
    display: block;
    padding: 10px 20px;
    transition: background-color .3s, color .3s;
}

.menu a:active,
.menu a:hover {
    background-color: #333;
    color: #eee;
}

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


.img-giff {
    height: 200px;
    width: 100%;
    padding: 20px;
}

.titulo {
    transform: scale(0.2) translateY(50vh);
    opacity: 0;
    animation: 1s ease 50ms animacaoTitulo forwards;
}

@keyframes animacaoTitulo {
    from {
        transform: scale(0.2) translateY(50vh);
        opacity: 0;
    }
    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

.site-subtitle,
.site-title {
    color: #eee;
    text-align: center;
}

.site-title {
    font-size: 2.5em;
    font-family: 'Montserrat', sans-serif;
}

.site-subtitle {
    font-style: italic;
    font-family: 'Montserrat', sans-serif;
    line-height: 1em;
}

Certainly! Here's an example of a possible new CSS file, with different colors and styles:

css
Copy code
/* reset geral do css */

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

body {
    background-color: #111;
    font-family: 'Montserrat', sans-serif;
    height: 100vh;
    font-size: 16px;
    color: #eee;
}

@media (min-width: 768px) {
    body {
        font-size: 18px;
    }
}

@media (min-width: 992px) {
    body {
        font-size: 20px;
    }
}

header {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.menu {
    background-color: rgba(255, 255, 255, 0.9);
    position: fixed;
    width: 100vw;
    top: 0;
    z-index: 1;
}

.menu ul {
    display: flex;
    justify-content: space-around;
}

.menu li {
    list-style: none;
}

.menu a {
    display: block;
    padding: 10px 20px;
    transition: background-color .3s, color .3s;
}

.menu a:active,
.menu a:hover {
    background-color: #333;
    color: #eee;
}

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

.img-giff {
    height: 200px;
    width: 100%;
    padding: 20px;
}

.titulo {
    transform: scale(0.2) translateY(50vh);
    opacity: 0;
    animation: 1s ease 50ms animacaoTitulo forwards;
}

@keyframes animacaoTitulo {
    from {
        transform: scale(0.2) translateY(50vh);
        opacity: 0;
    }
    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

.site-subtitle,
.site-title {
    color: #eee;
    text-align: center;
}

.site-title {
    font-size: 2.5em;
    font-family: 'Montserrat', sans-serif;
}

.site-subtitle {
    font-style: italic;
    font-family: 'Montserrat', sans-serif;
    line-height: 1em;
}

.scroll-down {
    color: #eee;
    position: absolute;
    top: 94%;
    left: 48%;
}

.fa-angle-down {
    font-size: 3rem;
    -webkit-animation: bounce .6s infinite;
    animation: bounce .6s infinite;
    animation-direction: alternate;
}

@keyframes bounce {
    0% {
        margin-top: 0;
    }
    100% {
        margin-top: 10px;
    }
}
Certainly! Here's an example of a possible new CSS file, with different colors and styles:

css
Copy code
/* reset geral do css */

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

body {
    background-color: #111;
    font-family: 'Montserrat', sans-serif;
    height: 100vh;
    font-size: 16px;
    color: #eee;
}

@media (min-width: 768px) {
    body {
        font-size: 18px;
    }
}

@media (min-width: 992px) {
    body {
        font-size: 20px;
    }
}

header {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.menu {
    background-color: rgba(255, 255, 255, 0.9);
    position: fixed;
    width: 100vw;
    top: 0;
    z-index: 1;
}

.menu ul {
    display: flex;
    justify-content: space-around;
}

.menu li {
    list-style: none;
}

.menu a {
    display: block;
    padding: 10px 20px;
    transition: background-color .3s, color .3s;
}

.menu a:active,
.menu a:hover {
    background-color: #333;
    color: #eee;
}

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

.img-giff {
    height: 200px;
    width: 100%;
    padding: 20px;
}

.titulo {
    transform: scale(0.2) translateY(50vh);
    opacity: 0;
    animation: 1s ease 50ms animacaoTitulo forwards;
}

@keyframes animacaoTitulo {
    from {
        transform: scale(0.2) translateY(50vh);
        opacity: 0;
    }
    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

.site-subtitle,
.site-title {
    color: #eee;
    text-align: center;
}

.site-title {
    font-size: 2.5em;
    font-family: 'Montserrat', sans-serif;
}

.site-subtitle {
    font-style: italic;
    font-family: 'Montserrat', sans-serif;
    line-height: 1em;
}

.scroll-down {
    color: #eee;
    position: absolute;
    top: 94%;
    left: 48%;
}

.fa-angle-down {
    font-size: 3rem;
    -webkit-animation: bounce .6s infinite;
    animation: bounce .6s infinite;
    animation-direction: alternate;
}

@keyframes bounce {
    0% {
        margin-top: 0;
    }
    100% {
        margin-top: 10px;
    }
}

.sobre,
.portfolio {
    padding: 1em;
    min-height: 100vh;
}

.contato {
    background-color: #333;
    padding: 0em;
    min-height: 20vh;
    padding-left: 1em;
}

.contato h2 {
    color: #eee;
    font-size: 2em;
    margin-top: 1em;
}

.sobre h2,
.portfolio h2 {
    font-family: 'Roboto', Helvetica, sans-serif;
    color: whitesmoke;
    margin-bottom: 1em;
    font-size: 2em;
    margin-top: 1em;
}

.sobre p {
    color: white;
    margin: 40px;
    text-indent: 1.4em;
    line-height: 2;
    margin-bottom: 1.5em;
    text-align: justify;
}

.sobre a {
    color: white;
    text-decoration: underline;
}

.sobre a:hover {
    background-color: cyan;
    text-decoration: none;
    color: magenta;
}

.sobre .avatar {
    align-content: center;
    clip-path: polygon(0% 0%, 100% 0%, 100% 75%, 75% 75%, 75% 100%, 50% 75%, 0% 75%);
    height: calc(10% - 0em - 50px);
    float: left;
    margin-left: 90px;
    margin-right: 90px;
}

.sobre figure {
    text-align: center;
}

.img-avatar {
    height: 500px;
    width: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 5000ms;
}

@media (max-width: 499px) {
    .sobre .avatar {
        clip-path: polygon(0% 0%, 100% 0%, 100% 75%, 75% 75%, 75% 100%, 50% 75%, 0% 75%);
        height: calc(50vh - 5em - 50px);
        float: left;
        margin-left: 50px;
        margin-right: 50px;
    }
    .img-avatar {
        height: 250px;
        width: 100%;
        object-fit: cover;
        object-position: center;
        transition: transform 5000ms;
    }
}

.img-avatar:hover {
    transform: rotate(360deg);
}

.portfolio .grid {
    display: grid;
    column-gap: 5em;
    row-gap: 5em;
    min-height: 80vh;
}

.flip-card {
    height: 200px;
    perspective: 1000px;
}

.flip-card:hover .card {
    transform: rotateY(180deg);
}

.card {
    position: relative;
    transform-style: preserve-3d;
    transition: transform 1s;
}

.card-front,
.card-back {
    backface-visibility: hidden;
    left: 0;
    position: absolute;
    top: 0;
    width: 100%;
}

.card-back {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, .7);
    height: 250px;
    /*width: 100%;*/
    transform: rotateY(180deg);
}

.portfolio figure {
    text-align: center;
}

.img-portfolio {
    height: 250px;
    /* width: 100%;
    object-fit: cover; */
    object-position: left bottom;
    transition: transform 500ms;
}


/*.img-portfolio:hover {
    transform: scale(1.5) rotate(-5deg);
} */

.contato .icons {
    text-align: center;
    align-items: flex;
}

.contato a {
    color: whitesmoke;
    font-size: 3em;
    transition: text-shadow 0.2s;
}

.contato i {
    padding: 15px;
    margin-left: 8px;
    margin-right: 8px;
}

.contato a:active,
.contato a:hover {
    text-decoration: none;
    text-shadow: 0px 0px 10px rgba(251, 255, 0, 0.6);
}

footer {
    font-size: 18px;
    color: white;
    text-align: center;
    margin-left: 8px;
    margin-right: 8px;
}