1 - Centrage vertical en 3 lignes
.element {
position: relative;
top: 50%;
transform: translateY(-50%);
}
@mixin vertical-align {
position: relative;
top: 50%;
-webkit-transform: translateY(-50%);
-ms-transform: translateY(-50%);
transform: translateY(-50%);
}
.element p {
@include vertical-align;
}