*{
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
}
body{
    /*border: 1px solid red;*/
    width: 100vw;
    min-height: 100vh;
}
ul{
    list-style: none;
}
aside{
    /*border: 1px solid blue;*/
    width: 100%;
    margin: 10px;
}
#nacional-importado{
    /*border: 1px solid red;*/
    width: 100%;
    display: flex;
    justify-content: space-around;
    align-items: center;
    background-size: auto;
    background-attachment: fixed;
}
#nacional-importado li{
    /*border: 1px solid red;*/
    width: 100%;
    text-align: center;
    line-height: 60px;
    margin-bottom: 10px;
    border-bottom: 1px solid #ccc;
    border-radius: 8px;
    background: rgba(47, 79, 51, 0.705);
}
#nacional-importado li a{
    display: block;
    color: #fff;
    font-size: 1.6em;
    text-transform: uppercase;
}
#nacional-importado li a:hover{
    background: rgba(108, 143, 113, 0.76);
    font-size: 2em;
    font-weight: 500;
    transition: 0.5s;
}
#container-produtos{
    /*border: 1px solid red;*/
    width: 100%;
}

#container-produtos{
    display: flex;
    flex-flow: row wrap;
    justify-content: space-around;
    margin: 40px 10px;
    text-align: center;
    line-height: 350px;
    font-size: 1.5em;
    font-weight: bold;
    text-shadow: 2px 2px rgb(63, 63, 63);
}
#container-produtos a{
    color: #fff;
}
#container-produtos .classe-produtos{
    /*border: 1px solid red;*/
    background-color: #ccc;
    border: 3px solid #9b9b9b;
    border-radius: 170px;
    width: 350px;
    height: 350px; 
    margin: 15px;
}
#container-produtos .classe-produtos:hover{
    font-size: 1.5em;
    transition: 0.5s;
    overflow: hidden;
    scale: 1.1;
}
#trauma{
    background: url(../img/trauma.jpg) no-repeat;
    background-size: cover;
}
#proteses{
    background: url(../img/persona.png) no-repeat center;
    background-size: cover;
}
#artroscopia{
    background: url(../img/med-esportiva.png) no-repeat;
    background-size: cover;
}
#coluna{
    background: url(../img/coluna.png) no-repeat;
    background-size: cover;
}


@media (max-width: 768px) {
    #nacional-importado{
        flex-direction: column;
    }
    #container-produtos{
        flex-flow: column;
        align-items: center;
        padding-top: 60px;
        margin:0;
    }
    footer{
        margin-top: 40px;
        position: absolute;
    }
}