mainStyle.css

body{
    background-size: 100%;
}
.focus{
    color: #ffffff;
}
.titulo{
    height: 23vh ;
    margin-top: 5vh;
}

.salud{
    margin-top: 7vh; 
}

.imagen:hover{
    box-shadow: 5px 5px 9px #b3b3b3,
        -5px -5px 9px #ffffff;
    transform: scale(1.3);
    margin-bottom: 2vh;
    transition: 2s;
    -webkit-transition: 2s;
    -moz-transition: 2s;
    -ms-transition: 2s;
    -o-transition: 2s;
}
.IconImg{
    width: 17vh;
    height: 17vh;
    box-shadow: 5px 5px 9px #b3b3b3,
        -5px -5px 9px #ffffff;
}
.imgSonidos:hover {
    box-shadow: 5px 5px 9px #b3b3b3, -5px -5px 9px #ffffff;
    transform: scale(1.3);
    margin-bottom: 2vh;
}
.footerImg{
    width: 13vh;
    height: 13vh;
}

.lienzo{
    height: 12vh;
}
@media (max-width: 575.98px) {
    .ayuda{
        display: flex;
        justify-content: center;
    }
    .lienzo{
        height: 0vh;
    }
    .back, .backImg, a{
        display: flex;
        justify-content: center;
    }
    .backImg{
        width: 13vh;
        height: 13vh;
    }
    .soundImg{
        width: 16vh;
        height: 16vh;
    }
    .footerImg{
        width: 13vh;
        height: 13vh;
    }
    h4{
        font-size: 2vh;
    }

    .salud{
        margin-top: 0vh; 
    }
}