.titleAccordion{
    display: inline-block;
}

.btnAccordion {
    width: 5vw; 
    max-width: 32px;
    display: inline-block;    
    vertical-align:text-bottom;
    cursor: pointer;
}

.btnAccordion:hover {
    opacity: 0.4;
}

.btnAccordion.accOpen {
    transform: rotate(180deg);
    -moz-transform: rotate(180deg);
    -o-transform: rotate(180deg);
}