* { 
    box-sizing: border-box;
    color: white;
}
a {
    text-decoration: none;
}
body, html {
    background-color: rgb(43, 43, 43);

    padding: 0;
    margin: 0;
    overflow-x: hidden;
    font-family: 'Arial', sans-serif;
}

.row-flex {
    display: flex;
    flex-direction: row;
}

header {
    width: 100vw;
    height: 100%;
    background: black;
}

header ul {
    width: 100%;
    list-style: none;
    margin: 0;
    padding: 0;
}

header ul li a {
    display: block;
    width: 23vw;
    text-transform: uppercase;
    text-decoration: 0;
    color:white;
    text-align: center;
    padding-top: 5px;
    padding-bottom: 5px;
}

header ul li a:hover {
    border: 1px solid white;
    border-radius: 5px;
}
progress{
    width: 100%;
    }
h1{
    text-align: center;

}
main{
    text-align: center;
    width: 100vw;
    height: auto;
}

.main-fotos{
    display: flex;
    flex-wrap: wrap;
    width: 90%;
    margin-left: 5%;
}
.main-fotos img {
    width: 25%;
    height: 370px;
    
}

.videos {
    display: flex;
    flex-direction: row;
    width: 100%;
}
.videos iframe{
    width: 100vw;
    height: 50vw;
    margin-bottom: 5px;
}
.main-fotos iframe{
    margin-top: 5%;
    width: 100%;
    height: 50vw;

}


h2{
    margin-bottom: 0;
}

.mains-fotos p{
    margin: 0;
}

table {
    width: 80%;
    text-align: center;
    margin-left: 10%;
    border: 1px solid white;
}

thead{
    font-size: 25px;
}

tbody{
   color: greenyellow;
}

ol{
    width: 80%;
    margin-left: 10%;
    text-align: left;
    font-size: 22px;
}

article{
    width: 80%;
    margin-left: 10%;
    text-align: justify;
    font-size: 21px;
}
.black-font{
    color: black;
}
iframe {
    width: 45%;
}
code del {
    color: rgb(43, 43, 43);

}

footer {
    padding: 5px;
    background: black;
    text-align: center;
}
button{
    background: grey;
    border-radius: 5px;
    padding: 5px;
}
.social a {
    font-size: 35px;
    text-decoration: none;
    color: white;
}


@media screen and (max-width: 3840px) {
    header ul li a {
        font-size: 40px;
    }
    .main-fotos{
        width: 80%;
        margin-left: 10%;
    }
    .main-fotos img {
        width: 25%;
        height: 816px;
    }
    p{
        font-size: 35px;
    }
    article{
        font-size: 35px;
    }
}

@media screen and (max-width: 2048px) {
    header ul li a {
        font-size: 35px;
    }
    .main-fotos img {
        width: 25%;
        height: 516px;
    }
}

@media screen and (max-width: 1920px) {
    header ul li a {
        font-size: 30px;
    }
    .main-fotos img {
        height: 400px;
    }
}


@media screen and (max-width: 1080px) {
    .main-fotos img {
        height: 380px;
    }
}

@media screen and (max-width: 460px) {
    .main-fotos{
        display: flex;
        flex-wrap: wrap;
        width: 100%;
        margin: 0;
    }
    .main-fotos img {
        width: 50%;
        height: 270px;
    }        
}

@media screen and (max-width: 640px) {
    .main-fotos img {
        width: 49%;
        margin-left: .5%;
        height: 270px;
    }        
}
@media screen and (max-width: 750px) {
    .main-fotos img {
        width: 49%;
        margin-left: .5%;
        height: 320px;
    }        
}



@media screen and (max-width: 460px) {
    .videos{
        flex-direction: column;
    }
}