main{
    width: 85%;
    left: 0;
    right: 0;
    margin: 0 auto;
}

h1{
    color: #281055;
    font-size: 5em;
}
h2{
    color: #5e0543;
    font-size: 3em;
}
p{
    color: #0b2470;
    font-size: 2em;
}
.listado{
    list-style-type: none;
    padding: 1px;
}
.listado li{
    display: block;
    position: relative;
    margin: 2%;
    font-size: 2em;
}
.listado li a{
    display: flex;
    position: relative;
    background: linear-gradient(to bottom, #b6caff, #0022e6);
    border-radius: 25px;
    height: 25vh;
    overflow: hidden;
}
.img_ob{
    margin-left: 2vh;
    padding: 1vh 0vh;
}
.caj_tex{
    margin-left: 2vh;
}
.titu_sec{
    font-size: 5.5vh;       
    text-decoration: underline;
}
.desc_sec{
    font-size: 3.5vh;
    color: #2e2e2e;
    padding: 0 1vh;
}
.listado li:hover{
    color: whitesmoke;
}
.listado li:hover a .desc_sec{
    color: whitesmoke;
}
.listado li:hover a .invert{
    filter: invert(1);
}
@media screen and (max-width : 1080px){
    .titu_sec{
        font-size: 4vh;
    }
    .desc_sec{
        font-size: 2.8vh;
    }
    .img_ob{
        height: 50%;
        width: 50%;
    }
    @media screen and (max-width : 670px) {
        .titu_sec{
            font-size: 3vh;
            color: black;
        }
        .desc_sec{
            font-size: 2vh;
        }
        .img_ob{
            width: 20%;
        }
    }
    @media screen and (max-width : 495px){
        .titu_sec{
            font-size: 2.5vh;
        }
        .listado li:hover a .titu_sec{
            color: whitesmoke;
        }
    }
}