estilo2.css

#div-negro{
    height: 300px;
    width: 500px;
    background-color: black;
    margin-top: 30px;
    margin-bottom: 30px;
    border: 1px 20px 30px 1px solid black;
    padding: 10px 5px;
}

#contenedor {
    display: grid;
    grid-column-gap: 50px;
    grid-row-gap: 50px;
    row-gap: 10px;
    text-align: center;
    color: white;
    font-size: 15px;
    font-weight: bold;
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
}

#uno {
    display: flex;
    flex-direction: row;
    border: 5px solid peru;
    height: 50px;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    box-sizing: border-box;
}

#uno-contact {
    background-color: lightcoral;
    justify-self: baseline;
    display: -webkit-box;
    -webkit-box-align: center;
    padding: 10px
}
#uno-careers {
    background-color: lightseagreen;
    justify-self: baseline;
    display: -webkit-box;
    -webkit-box-align: center;  
    padding: 10px
}

#uno-about {
    background-color: lightgreen;
    margin-left: auto;
    display: -webkit-box;
    -webkit-box-align: center;
    padding: 10px
}

#dos {
    border: 5px solid lightpink;
}



#dos-contact{
    background-color: lightcoral;
    height: 50px;
    margin: 0px;
    display: -webkit-box;
    -webkit-box-align: center;
    -webkit-box-pack: center    
}
#dos-careers{
    margin: 0px;
    height: 50px;
    background-color: lightseagreen;
    display: -webkit-box;
    -webkit-box-align: center;
    -webkit-box-pack: center
}
#dos-about{
    height: 50px;
    background-color: lightgreen;
    margin: 0px;
    display: -webkit-box;
    -webkit-box-align: center;
    -webkit-box-pack: center
}

#tres {
    border: 5px solid peru;
    height: 50px;
    display: flex;
    flex-direction: row;
}
#tres-contact {
    background-color: lightcoral;
    display: -webkit-box;
    -webkit-box-align: center;
    padding: 10px
}
#tres-careers {
    background-color: lightseagreen;
    display: -webkit-box;
    -webkit-box-align: center;
    padding: 10px
}
#tres-about {
    background-color: lightgreen;
    display: -webkit-box;
    -webkit-box-align: center;
    padding: 10px
}