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

@font-face{
    font-family: 'android';
    src: url('idroid.otf') format('opentype');
}

body{
    background: rgba(87, 247, 156, 0.589);
}

.cabecalho{
    width: 100%;
    height: 260px;
    box-shadow: 1px 1px 1px green;
    background-image: linear-gradient(to bottom, rgb(73, 221, 137) ,rgb(50, 124, 82),rgb(31, 97, 59) )
}

.titulo-destaque{
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    font: normal normal 35px;
    color: white;
    text-align: center;
    padding: 40px;
}

header > p{
    font: normal normal 15px Arial;
    color: white;
    text-align: center;
    margin: 5px 0;
    padding: 8px;
}

nav{
    padding: 18px;
}

nav ul{
    display: inline-block;
    color: white;
}

nav li {
    display: inline;
    margin-left: 15px;
    font-weight: bold;
    font-size:15px;
    transition: 1s;
}

nav li:hover{
    text-decoration: underline;
    font-size: 25px;
}

.caixa-principal{
    max-width: 800px;
    height: auto;
    margin: auto;
    background: white;
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.400);
}

.titulo-principal{
    font-family: 'android';
    width: 100%;
    font-size: 30px;
    color: rgb(31, 97, 59);
    text-align: justify;
    padding: 15px;
}

section p{
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    font-size: 18px;
    text-indent: 20px;
    margin: 15px;
    padding: 5px;
    line-height: 25px;
    text-align: justify;
}

.titulo-padrao{
    font-family: 'android';
    font-size: 20px;
    font-weight: normal;
    color: rgb(31, 97, 59);
    text-align: justify;
    padding: 15px;
    text-shadow: 2px 2px 10px rgb(58, 173, 106);
}

.imagem{
    display: block;
    max-width: 100%;
    height: auto;
    margin:auto;
    padding: 4px;
}

.imagem-bugdroid{
    display: block;
    margin:auto;
    max-width: 300px;
}

.video{
    margin: auto;
    border: 30px solid rgb(31, 97, 59) ;
}

.aside-aprender{
    max-width: 750px;
    height: auto;
    margin: 10px 25px;
    border-radius: 10px;
    background: rgba(170, 233, 197, 0.541);
}

.titulo-3{
    width: 100%;
    height: 35px;
    padding: 5px;
    text-align: justify;
    font-size: 20px;
    color: white;
    background-color: rgb(67, 170, 110) ;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}

.lista{
    list-style: none;
    list-style-position: inside;
    columns: 2;
    padding: 20px;
}


 
.aside-aprender a{
    text-decoration: none;
    color:rgb(7, 68, 33);
    font-weight: bold;
    transition: 1s;
 }

.aside-aprender a:hover{
    font-size: 20px;
}

main strong{
    color:#063d1e;
    font-weight: bold;
    font-size: 17px;
}

section p:last-child{
    padding: 30px 0;
 }

footer{
    color: white;
    width: 100%;
    max-height: 400px;
    background: rgb(7, 68, 33);
    padding: 10px;
 }

footer > p{
    text-align: center;
}

footer a{
    text-decoration: none;
    color: white;
    font-weight: bold;
 }

 footer a:hover{
    text-decoration: underline;
    color:rgb(19, 231, 111);
    font-weight: bold;
 }

 @media screen and (max-width: 600px){
    .cabecalho{
        width: 100%;
        height: auto;
        padding: 10px;
        box-shadow: 1px 1px 1px green;
        background-image: linear-gradient(to bottom, rgb(73, 221, 137) ,rgb(50, 124, 82),rgb(31, 97, 59) )
    }
    
    nav{
        padding: 1px;
    }

    nav li {
        display: block;
        padding: 5px;
        margin: 0px 5px;
        font-weight: bold;
        font-size:15px;
        transition: 1s;
    }
    
    nav li:hover{
        font-size: 18px;
    }

    .titulo-principal{
        font-family: 'android';
        width: 100%;
        height: auto;
        font-size: 17px;
        color: rgb(31, 97, 59);
        text-align: left;
        padding: 15px;
    }

    .titulo-padrao{
        font-family: 'android';
        font-size: 15px;
        font-weight: normal;
        color: rgb(31, 97, 59);
        text-align: justify;
        padding: 15px;
        text-shadow: 2px 2px 10px rgb(58, 173, 106);
    }

    .lista{
        list-style: none;
        list-style-position: inside;
        columns: none;
        padding: 10px;
    }

    iframe{
        width: 100%;
        height: 250px;
    }
 }