/* Tinc activat un thema de w3css, el que em permet usar aquestes classes:
https://www.w3schools.com/w3css/tryit.asp?filename=tryw3css_theme_teal_gradient
dins les tonalitats de fons: 
w3-theme-l4 (més light)
w3-theme-l3
w3-theme-l2
w3-theme-l1
w3-theme
w3-theme-d1
w3-theme-d2
w3-theme-d3
w3-theme-d4 (més dark)
i text:
w3-text-theme
*/

.flex{
    display: flex;    
    justify-content: space-around;
    flex-wrap: wrap;
}

body #w3-main {
    margin-left: 5%;
    margin-right: 5%;
    
}