@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,400;0,700;1,300&display=swap');

*{padding: 0; margin: 0; box-sizing: border-box; transition: 1s all;}
body {background-color: #dedede;
    font-family: sans-serif;
    
}



header{
    background-color: black;
    color: whitesmoke;
    font-family: sans-serif;
    font-family: 'Roboto', sans-serif;
    padding: 1rem;
    box-sizing: border-box;
    
}

nav {
 height: 50px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    margin: auto;
}



center{
display: block;
    text-align: -webkit-center;

}

h1{
    font-family: sans-serif;
    font-size: 5rem;
    color:#dedede;
    margin: 1rem;
}

h2{
    font-family: sans-serif;
    font-size: 1rem;
    color: #cccccc;
    margin: 1rem;

}

.materias-1 {
    color: black;
    font-size: 1.5rem;
}

h3 {
    margin-bottom: 1rem;
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    color: #4d4d4d
}

h5{
    margin-bottom: 0.5rem;
    margin-top: 0.5rem;
    font-family:'Roboto', sans-serif;
    font-weight: 700;
    color:#ffe2c0;
}

img {
    width: 15%;
    border-radius: 2.5rem;
    }

.grupo {
    font-family: 'Roboto', sans-serif;
    font-weight: 400;
}

main{
    background-color: #cccccc;
    font-family: 'Roboto', sans-serif;
    font-weight: 300;
    margin: 1rem;
    
}

article {
    margin: 1rem;
    background-color:#acacac;
    padding: 1rem;
    
}


div {
    background-color: white;
    margin: 1rem;
    width: 100%;
    display: block;
    box-sizing: border-box;
}

.columna-1{width: 100%;}
.columna-2{width: 100%;}
.columna-3{width: 100%;}  


.titulo{
    font-size: 1.2rem;
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    margin-bottom: 1rem;
}




ul {
    display: inline-block;
    list-style-type:none;
    color: white;
    

}


    



footer{
    background-color: #1d1d1d;
    font-family: 'Roboto', sans-serif;
    font-weight: 300;
    font-size: 0.7rem;
    color:white;
}


@media screen and (min-width:48rem) {
   
section{display: flex;}
.columna-1{width: 33%;}
.columna-2{width: 33%;}
.columna-3{width: 33%;}
    
}