*{
    margin: 0px;
    padding: 0px;
}
header{
    margin: auto;
    height: 100px;
    background-color: #FF6862;
    text-align: center;
}
body{
    background-color: #C49875;
}

#contenido div{
    padding-top: 40px;
    padding-left: 40px;
    float: left;
    width: 230px;
    height: 300px;
    margin: 10px;
    border-style: solid;
    box-sizing: border-box; 
    border-radius: 20px;
    background-color: #2881E3;
}

#contenido div:hover{
    background-color: #515151;
}

#seccion{
    margin: auto;
    width: 100%;
    height: 100px;
    background-color: pink;
    text-align: center;
}
a{
    text-decoration: none;
    color: black;
}